CBRC LET General Science Major Examination PDF

CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP GENERAL INSTRUCTIONS: 1. The test questionnaire contains 200 test questions. Examinees shall manage to use three (3) hours....

CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP GENERAL INSTRUCTIONS: 1. The test questionnaire contains 200 test questions. Examinees shall manage to use three (3) hours. 2. Read INSTRUCTIONS printed on your answer sheet. 3. Shade only one (1) box for each question on your answer sheets. Two or more boxes shaded will invalidate your answer. 4. AVOID ERASURES. 5. WARNING: This material is protected by Copyright Laws. Unauthorized used shall be prosecuted in the full extent of the Philippine Laws. For exclusive use of CBRC reviewees only. 1. The statement, “The worm is 2 centimeters long.” is a/an a. observation b. inference c. theory d. hypothesis 2. The organelle that breaks down lipids, carbohydrates, proteins into simpler form to be used by the cell is a. vacuole b. lysosome c. ribosome d. filament 3. By what process does a severely cut portion of a starfish grow into a full starfish? a. Binary fission b. Budding c. Fragmentation d. Regeneration 4. How can we differentiate arthropods from annelids? a. Arthropods have segmented body, annelids have non-segmented body b. Arthropods have wings, annelids have legs c. Arthropods have exoskeleton, annelids have endoskeleton d. Arthropods have jointed legs, annelids have none 5. What type of tropism is shown in the situation where the plant’s roots grew towards the surface of the ground? a. Positive Phototropism b. Negative Phototropism c. Positive Geotropism d. Negative Geotropism 6. Which of the following is not true of the Earth’s atmosphere? a. Its layers mix, heat up, and interact with the top layer of the Earth’s crust. b. It traps heat on the form of the greenhouse effect. c. It blocks the sun’s rays. d. It contains the variety of marine life. 7. What term is used to describe the ability to maintain a constant internal environment? a. Metabolism b. Growth and development c. Homeostasis d. Thermoregulation 8. Which is the smallest unit of life that can survive and reproduce on its own? a. Cell b. Organ c. Tissues d. Population 9. True of Trisomy 21: a. An abnormality of chromosomes inheritance in which there are 3 copies of chromosomes 21 b. Also known as Turner’s syndrome c. Presents with superior mental intelligence, tall stature and protruding d. Results when an individual is missing 3 chromosomes 10. Which of the following protists causes Malaria? a. Amoeba b. Euglena c. Plasmodium d. Paramecium 11. The deepest layer of the epidermis which consists of cuboidal or columnar cells plays a big role for mitotic division every 19 days is the: a. stratum spinosum b. stratum granulosum c. stratum corneum d. stratum basale 12. Mitochondria is the site of cellular respiration. Which of the following is the final end product of the process? a. Carbon dioxide b. Oxygen c. NADH d. ATP 13. Which of the following is the building block of carbohydrates? a. Amino acid b. Nucleotide c. Fatty acid d. Monosaccharide 14. What is the most common cause of cardiovascular disease? a. Fatty deposits in the arteries c. Lack of sodium in the diet b. Inadequate supply of red blood cells d. Increased heartbeat 15. Where does glycolysis take place? a. Ribosome b. Lysosomes c. Cytoplasm d. Golgi bodies 16. Which of the following cannot be found in prokaryotes? a. Cytoplasm b. Plasma membrane c. Membrane-bound nucleus d. DNA Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 17. Which of the following organelles produces turbo pressure against cell wall and mainly acts as a water reservoir? a. Plastids b. Vacuole c. Lysosomes d. Chloroplast 18. What is the branch of zoology that is devoted to the study of fish? a. Helminthology b. Ichthyology c. Chondrichthyes d. Ornithology 19. The process involved in the production of mRNA using DNA as template is termed _______? a. Transcription b. Replication c. Gene manipulation d. Reverse transcription 20. Where would the vesicles from the endoplasmic reticulum proceed containing the polypeptide for further modification? a. nucleus b. golgi complex c. plasma membrane d. mitochondria 21. Which of the following plant cells functions as a food storage? a. collenchyma b. parenchyma c. sclerenchyma d. guard cell 22. Which of the following groups of organisms is a very good source of antibiotics? a. Penicillium notatum b. Aspergillus niger c. Rhizopus stolonifera d. None of the above 23. All monocots possess the following characteristics except: a. scattered arrangement of vascular bundles c. fibrous root system b. parallel veins d. floral parts in multiples of 4 or 5 24. What is the most abundant inorganic compound in the protoplasm? a. Fluid b. Blood c. Plasma d. Water 25. What is the unit of heredity? a. Gamete b. Gene c. Sperm d. Cell 26. Which is the richest type of tropical rain forest in the Philippines? a. Molave forest b. Dipterocarp forest c. Mangrove forest d. Pine forest 27. Sound travels the fastest in ____. a. Solid b. Liquid c. Gas d.Vacuum 28. The cell wall of a plant cell is made of _______. a. Lipid b. Cellulose c. Protein d. Cell membrane 29. Which of the following is the correct sequence of the level of organization from lowest to highest? a. Cells-system-organs-tissues c. Cells-tissues-organs-system b. System-organs-tissues-cells d. Tissues-systems-cells-organs 30. Which kind of relationship is exhibited by algae and fungi in lichen? a. Commensalism b. Parasitism c. Symbiosis d. Competition 31. What causes camote leaves sold in markets to wilt? a. Decreased turgor pressure c. Increased diffusion pressure b. Increased turgor pressure d. Decreased air pressure 32. What is the product of biotechnology that has existed even before the industrial age? a. Chemical pesticide b. Vitamin C c. Synthetic Medicine d. Leavened bread 33. Identify which of the following is NOT true about tapeworm: a. They are animals c. They have special saprotrophic b. They are saprozoic d. They are autotrophic 34. Amoeba proteus is a very common amoeba that you use in the laboratory for experiments. What do they use for locomotion? a. flagella b. cilia c. pseudopodia d. feet 35. What type of reproduction is involved when an egg develops into a new organism without being fertilized by a sperm? a. budding b. binary fission c. parthenogenesis d. fragmentation 36. What do you call the finger-like folds on the inner linings of the small intestine? a. Villi b. Appendix c. Rugae d. Cecum 37. What is that flap-like structure that prevents the food from going the wrong way during swallowing? a. Epiglottis b. Larynx c. Esophagus d. Pharynx 38. What is the membrane that surrounds the lungs? a. Pleura b. Meninges c. Peritoneum d. Pericardium 39. What is that 3-carbon sugar formed during the light-independent reaction phase of the photosynthesis? a. ADP b. NADPH c. ATP d. PGAL 40. The process of physical division in eukaryotic cell which enables growth and production of worn-cell cell is known as a. Eukaryotic b.Prokaryotic c. Meiosis d. Mitosis Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 41. A fruit is a ________________. a. ripened ovary b. ripened ovule c. ripened bud d. ripened stigma 42. Which of the following is not true of fungi? a. some are pathogenic c. some are edible b. some are photosynthetic d. form symbiotic relationship with algae 43. What organs are controlled by the autonomic nervous system? a. skeletal b. muscle c. heart d. both A and C 44. How will you classify photosynthetic microorganisms under the two-kingdom scheme of biological classification? a. Under Kingdom Protista c. Under Kingdom Animalia b. Under Kingdom Monera d. Under Kingdom Plantae 45. Plants wilt when the rate of ____________. a. Water absorption is faster than transpiration c. Photosynthesis is faster than transpiration b. Transpiration is faster than water absorption d. Weight loss after several weeks 46. What do you call the types of symmetry where the body parts are paired on either side of the body? a. Dorsal b. Bilateral c. Radial d. Ventral 47. Which stage of incomplete metamorphism is undergone by grasshoppers? a. Nymph, pupa, adult c. Egg, nymph, adult b. Egg, larva, pupa, adult d. Egg, pupa, adult 48. What is the longest bone in the body? a. Humerus b. Femur c. Tibia-fibula d. Clavicle 49. Which causes our bones to turn brittle and easily break? a. Turning into muscle tissues c. Turbidity decrease b. Increase in flexibility d. Removal of collagen 50. How many bones does an adult human body have? a. 206 b. 200 c. 217 d. 201 51. What do you call automatic responses to an external stimulus? a. Reflex b. Instinct c. Impulse d. All of these 52. What structure provides flexible support and protection to the spinal cord? a. Skull b. Ribs c. Vertebral column d. Sternum 53. Which form of RNA delivers information from DNA to be used in making protein? a. Messenger RNA b. Ribosomal RNA c. Transfer RNA d. All of these 54. Which of the following is not a type of cell? a. Bacterium b. Amoeba c. Sperm d. Virus 55. A type of chemical process within and in relation to living organisms ________. a. Biotechniques b. Biochemistry c. Biology d. Microbiology 56. What would you do if you were asked to apply the most basic process in the Science of Taxonomy? a. Map down organisms c. Differentiate organisms b. Understand organisms d. Identify organisms 57. Gibberellins cause growth by stimulating ___________. a. Cell division b. Dormancy c. Cell growth d. Germination 58. Identify which of the following is mismatched: a. Endocytosis – phagocytosis and pinocytosis c. Anabolism – cellular respiration b. Passive transport – diffusion and osmosis d. Catabolism – digestion of food 59. A series of membrane-bound channels free of ribosomes is called ____________. a. Smooth endoplasmic reticulum c. Plastid b. Mitochondrion d. Rough endoplasmic reticulum 60. What kind of organism is the schistosoma which causes schistosomiasis, a tropical disease traced to contaminated water? a. Virus b. Flatworm c. Fungus d. Protist 61. Which of the following statements is true of diffusion? a. It requires an expenditure of energy by the cell b. It is a passive process c. It occurs when molecules move from a region of lower concentration to one of higher concentration d. It requires a membrane 62. Which are small, irregularly-shaped cells without nuclei but are rich in ATP? a. Leukocytes b. Thrombocytes c. Lymphocytes d. Erythrocytes Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 63. What branch of Biology is involved when one is studying the characteristic structure and functions of all kinds of cells? a. Cytology b. Morphology c. Physiology d. Histology 64. Which biome grows tropical grassland with scattered individual trees and larger herbivores? a. Tundra b. Rain forest c. Grassland d. Savanna 65. What do you call that process in birds wherein they shed off features at least once a year? a. Skinning b. Molting c. Furrowing d. Migrating 66. The largest organ inside the human body is the _____________. a. Brain b. Heart c. Liver d. Lungs 67. Which genetic term pertains to the physical appearance of an individual? a. Genotype b. Phenotype c. Haplotype d. Clone 68. In applying crop technology, which of the following will you NOT use since these are not genetically modified organisms? a. Delayed ripening tomato c. A-enhanced golden rice b. Cross-bred hybrid plants d. Drought resistant Bt. Corn 69. These are the characteristics you can find to show that the bacteria are the earliest life forms in primitive earth, but NOT to include _______. a. They are only organisms made of prokaryotic cells b. They do not have a nuclear membrane c. They produce sexually with parent producing two identical daughter cells d. They have a single circular DNA 70. When the temperature of the body is greater than the surroundings, how does the body maintain homeostasis? a. By conduction b. By manual exercise c. By perspiration d. By radiation 71. Which of the following is considered multicellular? a. Embryo b. Fertilized egg c. Egg cell d. Sperm cell 72. Which sphere on earth life exists? a. Stratosphere b. Biosphere c. Lithosphere d. Atmosphere 73. Which of the following is true of Phylum Chordata? I. Presence of notochord that provides skeletal support II. Pharyngeal slits that have become modified for gas exchange III. Dorsal hollow nerve cord that develops into the central nervous system a. II and III b. I and II c. I and III d. I, II and III 74. Which of the following is true of mammals? I. They have three chambered heart II. They produce milk for the young III. They are warm blooded a. I and II b. II and III c. I and III d. I, II and III 75. Which of the following is responsible for formation of blood cells? a. Cartilage b. Bone marrow c. Joints d. Tendons 76. Which of the choices is a dicot? a. Sugarcane b. Grass c. Coconut d. mango 77. DNA replication involves unwinding two strands of parent DNA, copying each strand to synthesize complementary strands, and releasing the parent and daughter DNA. Which of the following accurately describes this process? a. This is an anabolic process c. This is both anabolic and catabolic b. This is a catabolic process d. This is a metabolic process but is neither anabolic or catabolic 78. Which of the choices is a monocot? a. Guava b. Banana c. star apple d. gumamela 79. The following are functions of plant’s roots except: a. Absorbing water and minerals c. Breaking down food into nutrients b. Providing stable foundation for growth d. anchoring the plant in the soil 80. A plant placed in an airtight glass container and watered without allowing air into and out of the container will eventually die because of the lack of a. Oxygen b. Water c. light d. carbon dioxide 81. According to Rutherford’s calculations, the volume of an atom is mostly _____ a. positive charged particles. c. neutrally charged particles. b. negative charged particles. d. empty space 82. The process which is not a type of mechanical disintegration is ____? a. Frost wedging b. Oxidation c. Abrasion d. Roof penetration Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 83. The element argon, with atomic number 18, belongs to which group? a. Alkali metals b. Lanthanides c. Halogens d. Noble gases 84. Two different isotopes of the same element have a. the same number of protons, neutrons, and electrons. b. the same number of protons and neutrons but different numbers of electrons. c. the same number of protons and electrons but different numbers of neutrons. d. the same number of neutrons and electrons but different numbers of protons. 85. Which of the following is not true of a compound? It is a. a pure substance. b. composed of combinations of atoms c. held together by chemical bonds. d. a substance that cannot be broken down into simpler units 86. Which of the following is a compound? a. Cemented wall b. Dry ice c. Gold d. Tincture of iodine 87. Which is most likely to change the blue litmus paper to red? a. Ammonia in water b. Detergent solution c. Lime water d. Vinegar 88. Atoms that achieve an octet by sharing electrons form a. covalent bonds. b. ionic bonds. c. metallic bonds. d. hydrogen bonds. 89. Which can be classified as a homogeneous mixture? I. Buko pie II. Blood III. Virgin coconut oil IV. Mango juice a. III only b. I and II only c. I, III, and IV only d. II, III and IV only 90. An odorless and colorless matter boils at 100℃ and melts at 0℃ What inference can be drawn from this observation? a. It is a metal. b. It is a mixture c. It is non-metal. d. It is a pure substance. 91. There are millions of organic compounds but only thousands of inorganic compounds because a. organic compounds were formed by living things. b. there is more carbon on Earth’s surface than any other element. c. atoms of elements other than carbon never combine with themselves. d. Carbon atoms can combine with up to four other atoms, including other carbon atoms. 92. A hydroxyl, -OH, functional group is found in a. Ketone b. Alkanes c. Aldehydes d. Alcohols 93. A hydrocarbon with a carbon-to-carbon triple bond is an a. Alkane b. Alkene c. Alkyne d. Alkaline 94. The combination of 2 or more substances in which identities of the individual substances are retained is called? a. Pairing b. Bond c. Union d. Mixture 95. You know for sure that the compound named heptane has a. more than 7 isomers. c. only single bonds. b. 7 carbon atoms in each molecule. d. All of the above are correct. 96. Carbon-12 atoms have ______________. a. 6 electrons, 6 protons, 6 neutrons c. 12 electrons, 6 protons, 6 neutrons b. 6 electrons, 12 protons, 6 neutrons d. 16 electrons, 6 protons , 6 neutrons 97. Which of the following is an organic compound? a. Baking soda b. Glucose c. Limestone d. Sulfuric acid 98. Which of the following is the molecular formula for hexane? a. C5H11 b. C5H12 c. C6H12 d. C6H14 99. A hydrocarbon molecule is considered to be saturated if the molecule contains a. Single covalent bonds, only c. A triple covalent bond b. A double covalent bond, only d. Single and double covalent bonds 100. As a chemical bond forms between 2 hydrogen atoms in a system, energy is released and the stability of the system _____. a. Increases b. Decreases c. Remains the same d. None of the above 101. A protein is a polymer formed from the linking of many a. glucose units. b. DNA molecules. c. amino acid molecules. d. Monosaccharides 102. Petroleum is believed to have formed mostly from the anaerobic decomposition of buried a. dinosaurs. b. Fish. c. pine trees d. plankton and algae Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 103. Chargaff’s rule states that DNA has: a. The same numbers of purines as pyrimidines c. The same number of A as T b. the number of purines is twice the number of pyrimidines d. The same number of G as C 104. Which of the following codons are a start codon and a stop codon, respectively? a. AUG; UTA b. AGU; TAT c. AGU, TGA d. AUG, UAA 105. What do the lytic and lysogenic cycles of viruses have in common? a. The host cell dies c. The virus inserts its genetic information into the host cell b. The virus dies d. Copies of the virus are immediately released from the host 106. Which biomolecule is considered the building blocks of tissues and organs? a. Carbohydrates b. Lipid c. nucleic acid d. Protein 107. Which of the following serves as thermal insular in the body? a. Carbohydrates b. Fats c. Nucleic acids d. Proteins 108. In RNA, which is the correct complementary pairing of the nitrogenous bases? a. AG and CU b. AA and GG c. AC and GC d. AU and GC 109. What is the main function of the hormone oxytocin in the body? a. Controls water excretion by the kidneys b. Stimulates conversion of glycogen to glucose c. Controls blood – glucose level and storage of glycogen d. Stimulates contraction of the uterine muscles and secretion of milk by the mammary glands 110. The action of disrupting the three-dimensional shape of a protein is termed a. Dehydration b. Denaturation c. Deamination d. Hydrolysis 111. Which of the following tells us that energy cannot be created nor destroyed, but it can be transferred from one location to another and converted to and from other forms of energy? a. 1st Law of Thermodynamics c. 3rd Law of Thermodynamics b. 2nd Law of Thermodynamics d. Zeroth Law of Thermodynamics 112. Having thermodynamics in mind, what do you call the finite quantity of matter or prescribed region of space? a. System b. Boundary c. Heat d. Surroundings 113. What kind of system is present in thermodynamics if there’s no mass permitted to cross the boundary, heat and can enter or leave the system but not the mass? a. Open System b. Closed System c. Mixed System d. Thermodynamics 114. Which of the following is the energy transferred to or from an object through the application of force along a displacement? a. Energy b. Power c. Work d. Thermodynamics 115. Vhal put on his bag-pack of weight 120 N. He then starts running on a level ground for 100 meters before starting to climb up a ladder up a height of 100 meters. How much work was done? a. 1200 J b. 1500 J c. 1400 J d. 1700 J 116. What will happen to a moving object if the sum of all the forces acting on it is zero? a. It will accelerate uniformly. c. It will change the direction of its motion. b. It will slow down and stop. d. It will continue moving with constant velocity. 117. An object is thrown straight up. Which of the following is TRUE about the sign of work done by the gravitational force while the object moves up and down? a. Work is zero on the way up, work is zero on the way down. b. Work is negative on the way up, work is negative on the way down. c. Work is negative on the way up, work is positive on the way down. d. Work is positive on the way up, work is negative on the way down. 118. Celso is making a picture frame. He sticks a nail into a piece of wood and hits the nail with a hammer. Which form of energy is NOT released when the hammer hits the nail? a. Chemical b. Kinetic c. Sound d. Thermal 119. When coal is burned to produce electricity, the electrical energy produced is less than the potential energy of the coal. Which BEST explains this observation? a. The amount of energy in the coal is not known. b. As the coil is heated, the molecules move so fast that they are destroyed. c. Some of the potential energy in the coal is converted into forms of energy other than electricity. d. Some of the potential energy in the coal requires more intense heat so that can be compared to electricity. 120. Which of Newton’s laws best explains why motorists should always wear seat belts? a. Law of Inertia b. Law of Acceleration c. Law of Interaction d. Law of Gravitation 121. An electric rice cooker operates at 240 V and uses a current of 8 amperes. What is the resistance of the rice cooker? a. 20 Ohms b. 30 Ohms c. 40 Ohms d. 50 Ohms Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 122. What is the TRUE of all combinations of resistors arranged in parallel? I. Current splits down each leg of the combination. II. Voltage is constant across each leg of the combination. III. Resistance is the same for each leg of the combination. a. I and II only b. I and II only c. II and II only d. I, II and III 123. Which states that the sum of all potential rises and potential drops in any loop (closed circuit) is zero? a. Coulomb’s Law b. Kirchoff’s Law c. Law of Electrolysis d. Ohm’s Law 124. What happens to the current if resistance increases? a. Decreases b. Increases c. No change d. Cannot be determined 125. What is the resistance of an electric bulb drawing 1.2 A current and 6.0 V? a. 0.2 Ω b. 0.5 Ω c. 2 Ω d. 5 Ω 126. Radiant energy can be converted to electrical energy using ______. a. light bulbs b. Engines c. solar cells d. electricity 127. Who discovered the relationship between magnetism and electricity that serves as the foundation for the theory of electromagnetism? a. Luigi Galvani b. Hans Christian Oersted c. Andre Ampere d. Charles Coulomb 128. A substance that attracts pieces iron a. Conductor b. Semiconductor c. Magnet d. All of the above 129. Who demonstrated the theory of electromagnetic induction in 1831? a. Michael Faraday b. Andre Ampere c. James Clerk Maxwell d. Charles Coulomb 130. Heat is the _______________. a. total internal energy of an object c. measure of potential energy of molecules b. average kinetic energy of molecules d. same thing as a very high temperature 131. Why does a blue t-shirt appear blue? a. Blue is absorbed by the t-shirt c. Blue is reflected by the t-shirt b. Blue is emitted by the t-shirt d. Blue is reflected by the t-shirt 132. Under which type of light do we easily get sunburned? a. Infrared b. Microwave light c. Ultraviolet d. Visible light 133. What phenomenon is a result of the bending of light particles that causes haloes, and sundogs, and mirage? a. Refraction b. Reflection c. Interference d. Dispersion 134. What kind of mirror is also known as a converging mirror? a. Concave b. Convex c. Rear mirror d. Side mirror 135. What is the value and symbol of the speed of light? a. 3.0 x 10 ^ 8 m/s^2 : c b. 3.0 x 10 ^ 8 m/s : v c. 3.0 x 10 ^ 8 m/s^2 : v d. 3.0 x 10 ^ 8 m/s : c 136. According to Einstein, what is considered the fourth dimension? a. Curled dimension b. Horizontal dimension c. Space dimension d. Time dimension 137. Which of the following is the BEST description of a white light? a. It is a mixture of every color. c. It is a mixture of red, blue and yellow. b. It is a mixture of seven colors. d. It is a pure color that cannot be broken up. 138. The number of vibrations that occur in 1 second is called ___________________. a. Period b. Frequency c. Amplitude d. Sinusoidal 139. He proposed the continental drift theory? a. Alfred Wallace b. Alfred Wegener c. Charles Darwin d. Lavoisier 140. The part of the electromagnetic spectrum that our eyes can detect is _________________. a. Ultraviolet b. Infrared c. Visible d. All of the above 141. _______ is the science that is devoted to the study of the earth’s place in the universe, its structure and the processes that occur that contribute to its change. a. Physics b. Biological Science c. Earth Science d. General Science 142. Which of the following is a direct result of the tilt of the Earth’s axis? a. uneven periods of day and night c. the occurrences of solstice b. differences of the seasons between the hemispheres d. all of the above 143. Scientists, through experimentation, believe that the earth possesses _______. a. a liquid inner core and a solid outer core c. a liquid outer core and a solid inner core b. a solid core and a liquid mantle d. has a solid crust and a liquid mantle Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 144. The continental drift theory can be explained as ________. a. the movement of the Earth’s tectonic plates c. the movement of the large land masses on the crust b. the gradual widening of the oceans d. the gradual shrinking of continents 145. Mike was asked to identify the rock samples by the way they split into definite pieces. He does by identifying the samples’ _______. a. Hardness b. Streak c. Cleavage d. Specific gravity 146. All of the following occur in the Troposphere except _______. a. Storms b. Tornadoes c. cloud formations d. aurora 147. Which of the following are not true? I. Land breezes occur in the daytime II. Sea breezes occur when the land is warmer than the body of water III. Breezes are caused by convection in the atmosphere IV. Mountain breezes occur in the evening a. I and IV b. I and II c. II and III d. III and IV 148. Heat and pressure change rocks into a. igneous rocks b. sedimentary rocks c. metamorphic rocks d. clastic rocks 149. Given Nitrogen (N), Oxygen (O) and Carbon Dioxide (CO2), which item below shows the correct order in terms of increasing abundance in the atmosphere? a. N, O, CO2 b. O, CO2, N c. CO2, O, N d. O, N, CO2 150. The relationship between rocks that are continually changing over long periods of time is called a. Geology b. Mineralogy c. rock cycle d. weathering 151. The science that studies the atmosphere and weather phenomena is a. astronomy b. Astrology c. Meteorology d. space science. 152. The primary cause for the continuous cycling of water in the earth is the _______. a. Wind b. Soil c. Sun d. Earth’s rotation 153. From November to February, the dominant monsoon in our country is the ______ monsoon. a. Northwest b. Southwest c. Northeast d. Southeast 154. An unknown mineral was found to be lustrous, ductile, and resistant to scratching. Most probably, the mineral is _______. a. a gem stone b. Siliceous c. Metallic d. non-metallic 155. When wind, water or the activity of animals carry soil from one place to another, this process is known as _______. a. Weathering b. Erosion c. Sedimentation d. Decantation 156. Which of the following is NOT an agent of weathering? a. Flowing Water b. Transport of animals c. Changing Air Temperature d. Movement of wind 157. When an earthquake occurs, the actual point where an earthquake originates is called the ______. a. Epicenter b. focus c. fault line d. Fissure 158. A “carbon footprint” is the _______. a. amount of space you occupy c. the amount of greenhouse gasses you emit b. amount of carbon paper you use d. none of the above 159. Which cloud is considered to be an indicator of fair weather? a. Nimbus b. Cumulus c. cirrus d. Stratus 160. All of the following are renewable energy sources except ________. a. Tides b. Sunlight c. Geothermal Vents d. Coal mines 161. _______ is a region of space containing a huge amount of mass compacted into an extremely small volume with a gravitational influence so strong that nothing, not even light, can escape its grasp. a. Accretion disks b. Black Hole c. Alternate Universe d. Parallel Universe 162. Which of the following is NOT a minor member of the Solar System? a. Comets b. Asteroids c. Moons d. Sun 163. Venus is the hottest planet in the Solar System because _______. a. it is the nearest planet to the sun c. it rotates faster than the other planets b. it is covered by thick atmosphere of carbon dioxide d. it is twice the size of the earth 164. The Moon exhibits different phases because _______. a. it revolves around the Earth c. the Earth revolves around the sun b. it rotates around its axis d. the Earth’s axis is titled 165. Nicolas Copernicus proposed which model of the solar system? a. Tychonic Model b. Ptolemaic Model c. Geocentric Model d. Heliocentric Model Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 166. What type of planets are Mercury, Venus, Earth, and Mars? a. Early planets b. Terrestrial planets c. Small planets d. Hot planets 167. The most widely accepted theory on the origin of the solar system is a. Big Bang. b. conservation of matter. c. protoplanet nebular. d. collision of planets 168. Our Sun is _________________. a. one of several stars in the solar system. c. an average star, considering mass and age. b. the brightest star in the night sky. d. a protostar. 169. Approximately how old is the universe? a. 5 billion years b. 10 billion years c. 14 billion years d. 25 billion years 170. During which moon phase are solar eclipses experienced? a. full moon b. new moon c. first quarter d. last quarter 171. Four students were discussing the conditions where solar eclipses occur. Who among them has the correct information? I. Mark said that it occurs when the moon is between the sun and earth II. Melvin said that it occurs when the earth is between the sun and moon III. Justin said that it occurs when the sun is between the moon and the earth IV. Frank said that it occurs when the sun, moon and earth form 90 degree angles a. Mark b. Melvin c. Justin d. Frank 172. What is the more common name for the constellation Canis Minor? a. Little dog b. Little cat c. Big dog d. Big cat 173. Approximately, how many days does it take the moon to complete one rotation around the earth? a. 25 days b. 26 days c. 27 days d. 28 days 174. Which planet do the moons of Phobos and Deimos belong to? a. Mercury b. Venus c. Mars d. Earth 175. In which galaxy does earth exist? a. Milky Way Galaxy b. Andromeda Galaxy c. Canis Major Galaxy d. Canis Minor Galaxy 176. If the earth has completed three revolutions, how many rotations has it completed? a. 1094 ¼ rotations b. 1094 ¾ rotations c. 1095 ¾ rotations d. 1095 ¼ rotations 177. What is the highest volcanic mountain in the solar system that is located on Mars? a. Mt. Everest b. Olympus Mons c. Ascraeus Mons d. Mt. Pinatubo 178. What was the first microsatellite launched by the Philppines? a. Apollo 13 b. Sputnik c. Diwata d. Maya 179. What was the name of the space mission that landed the first humans on the moon? a. Apollo b. Skylab c. Gemini d. Mercury 180. What is the color of the hottest star in the Universe? a. Red b. Blue c. yellow d. orange 181. Why is science valued? a. Because science has helped in improving living conditions b. Because science has helped in satisfying many basic human needs c. Because science has caused detrimental effects to the environment d. Both A and B 182. The physical sciences include physics (the study of physical things), chemistry (the study of matter), and astronomy (the science of celestial objects). What facet of science is illustrated here? a. Science as a set of skills c. Science as a global human endeavor b. Science as a broad body of knowledge d. Science as a social activity 183. The six basic scientific process skills are observation, communication, classification, measurement, inference, and prediction. What scientific facet is shown here? a. Science as a set of skills c. Science as a global human endeavor b. Science as a broad body of knowledge d. Science as a social activity 184. It is concerned about teaching, learning, and understanding science. a. Science process skills b. Science teacher c. Science workshop d. Science education 185. It is a series of processes for validating and expanding scientific knowledge. a. Scientific literacy b. Scientific method c. Scientific name d. Scientific jargon 186. It refers to addressing our own needs without jeopardizing future generations’ potential to do the same. We need not only natural but also social economic resources. a. Sustainability b. Scientific literacy c. Science education d. Development goals Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY CONTROLLED COPY: 2023 Rev. 00 LET GENERAL SCIENCE MAJORSHIP 187. The United Nations’ Sustainable Development Goals (SDGs) are made to serve as a shared blueprint for peace and prosperity for people and the planet now and into the future. What facet of science is illustrated here? a. Science as a set of skills c. Science as a global human endeavor b. Science as a broad body of knowledge d. Science as a social activity 188. Though mainly an activity aimed to preserve ecological balance and conservation, recycling can create jobs and reduce solid waste collection, transportation, and disposal costs. Monetary profit can also be made from selling recyclable materials. What facet of science is illustrated here? a. Science as a set of skills c. Science as a global human endeavor b. Science as a broad body of knowledge d. Science as a social activity 189. All of the following statements are TRUE except: a. The teaching of science appreciates the benefits and limitations of science and its applications b. The teaching of science develops inquiring minds and curiosity about the world c. The teaching of science obscures the understanding of the international nature of science d. None of the above. 190. This strategy aims to expose students to a broad range of concepts/topics and disciplines until they master them by studying them repeatedly but with varying degrees of difficulty. a. Teaching outside specialization c. Learning loss b. Spiral progression d. Educational disruption 191. When experimenting with the growth of a plant, a scientist uses three of the same type of plants, two different fertilizers, equal light, and equal water. What type of variable is the water? a. Dependent b. Independent c. Control d. Interdependent 192. In an experiment to determine what type of acid is the MOST corrosive (destructive), which of these would NEED to be a controlled variable? a. The acids used c. The size of the hole created by the acid b. The material the acid is poured on d. None of the above 193. Students were involved in an experiment to investigate whether playing music while they took a test affected their scores. What would their test scores be? a. Independent variable b. Dependent variable c. Controlled variable d. Hypotheses 194. If you were running an experiment to determine the temperature at which beans sprout the fastest, what would be the independent variable? a. The number of beans you plant c. The amount of water you give the beans b. The height of the sprouts you grow d. The temperature at which each bean is kept 195. If you are planning on teaching your young students about the scientific method, which of the following strategies are most developmentally appropriate? a. Have students list each step of the scientific method b. Have students talk with a partner about each step of the scientific method c. Have students repeat the steps in the scientific method with each experiment d. Have students read about what the scientific method is 196. Pedagogical approach in teaching biology through hands on activities and creative projects? a. Inquiry based b. Metacognitive c. Interactive d. Lecture 197. How would you BEST describe developmentally appropriate practices? a. Approaches educators take to create meaningful, authentic assessments. b. Approaches educators take to create meaningful, grade-level experiences that promote learning c. Approaches students take to perform well on assessments d. Approaches students take to learn grade-level content. 198. Teaching ______ allows even younger students to ask questions, investigate them, and make observations to draw conclusions a. Communication skills c. Literacy skills b. Collaboration and determination d. Critical thinking and problem solving 199. Why should educators teach science skills to younger students? a. It is required by law and local government units. b. Our society needs more scientists, starting them early may encourage them to choose a career in science. c. It can help them form a foundation of knowledge that’s useful in higher classes. d. Younger students should NOT be taught science concepts, as that is advanced teaching they are not ready for. 200. What are some basic concepts teachers can introduce to younger children to help them in science? a. Waves, atoms, magnetism b. Names of shapes, names of fluids, names of construction materials (scissors, tape, etc.) c. Krebs cycle, electricity, quantum mechanics d. Molecular structures, atoms, theory of relativity -End- “Work hard in silence, let your success be your noise.” – Frank Ocean Dr. Carl E. Balita Review Center 2nd Flr., Carmen Building, 881 G. Tolentino St. corner España Blvd., Sampaloc, Manila 1008 CONTROLLED COPY