LET Reviewer Biology Part 1 PDF

Get more Free LET Reviewers @ www.teachpinas.com LET Reviewer Biology Part 1 8.Why it is necessary men have more red blood 1. Where do producers obtain their energy? cells per cubic millimeter of blood than A. From other producers women? B....

Get more Free LET Reviewers @ www.teachpinas.com LET Reviewer Biology Part 1 8.Why it is necessary men have more red blood 1. Where do producers obtain their energy? cells per cubic millimeter of blood than A. From other producers women? B. From the consumers A. Man does strenuous activities and need C. From the decomposers more energy D. From the sun B. They have bigger physique and need more blood 2. Why do you experience not seeing things C. Man waste more blood cells and need extra clearly for some seconds when you enter D. They are more prone to anemia disorders suddenly a well-lighted room after coming from a dark room, you? 9.Which of the following is the building block of A. The pupils are not adapted to the dark protein? B. The eyes are adapted to the light only A. Amino acid C. The pupils are not dilated yet B. Nucleotide D. Light had caused temporary blindness C. Fatty acid D. Monosaccharide 3. What term is used to describe the ability to maintain a constant internal environment? 10.Where does protein synthesis take place? A. Metabolism A. Ribosomes B. Growth and development B. Lysosomes C. Homeostasis C. Endoplasmic reticulum D. Thermoregulation D. Golgi bodies 4.What is the most common cause of 11.Why are our lips “redder” than our palm? cardiovascular disease? A. There is increased blood flow in the lips A. Fatty deposits in the arteries B. Lips are heavily keratinized B. Inadequate supply of red blood cells C. Lip epidermis is thinner C. Lack of sodium in the diet D. Many blood vessels are located around the D. Increased heartbeat lips 5.Which is the smallest unit of life that can 12.Which of the following cannot be found in survive and reproduce on its own? prokaryotes? A. Cell A. Cytoplasm B. Organ B. Plasma membrane C. Tissues C. Membrane-bound nucleus D. Population D. DNA 6.Which region of a vertebrate forebrain is 13.What do we call mutation that is brought considered with the neutral-endocrine control about by the earth natural radioactivity? of visceral activities? A. Continuous A. Cerebellum B. Induced B. Thalamus C. Lysosomes C. Hypothalamus D. Chloroplast D. Pituitary 14.Which of the following organelles produces 7.Which of the following is the building block turbo pressure against cell wall and mainly acts carbohydrate? as water reservoir A. Amino acid A. Plastids B. Nucleotide B. Vacuole C. Fatty acid C. Lysosomes D. Monosaccharide D. Chloroplast Get more Free LET Reviewers @ www.teachpinas.com 15.What is the branch crobial organisms is used in the creation of genetically modified 22.Which of the following is not considered as organisms? a reproductive cell? A. Pseudomonas vulgaris A. Gamete B. Bacillus thuringensis B. Somatic cell C. Agro bacterium tumafaciens C. Egg cell D. Escherichia coli D. Sperm cell 16.What is the branch of zoology that is 23.The cell wall of plant is made of _______. devoted to the study of fish? A. Lipids A. Helmintology B. Cellulose B. Ichthyology C. Protein C. Chondrichthyes D. Cell membrane D. Ornithology 24.Which of the following is the correct 17.The process involved in the production of sequence of the level of organization from mRNA using DNA as template is termed _______? lowest to highest? A. Transcription A. Cells-system-organs-tissues B. Replication B. System-organs-tissues-cells C. Gene manipulation C. Cells-tissues-organs-system D. Reverse transcription D. Tissues-systems-cells-organs 18.What is the most abundant inorganic 25.At metaphase of the meiotic division, the compound in the protoplasm? chromosomes are attached to the spindle fibers A. Fluid as ________. B. Blood A. Double chromatids C. Plasma B. Non-homologous pairs D. Water C. Single chromatid strands D. A tetrad of four chromatids 19.Which is the riches type of tropical rain forest in the Philippines? 26.Which of the following is an example of A. Molave forest behavioral adaption? B. Dipterocarp forest A. Thick green stems of the cactus plant C. Mangrove forest B. Thick fur of the bear D. Pine forest C. Shedding leaves during summer D. Presence of cuticle on the upper surface of 20.What muscle is described as involuntary, the leaves not striated, and have a single nucleus? A. Smooth 27. The bipolar nature of the cell membrane is B. Skeletal due to _______. C. Cardiac A. Presence of carries D. Connective B. Presence of oxygen C. Phospholipids bilayer 21.We feel warmer just before it rains because D. Integral proteins __________. A. Heat is released by the evaporation of 28.Which of the following is made up of diploid water number of cells? B. The clouds prevent heat from escaping the A. Zygote earth B. Sperm cell C. There is an increased relative humidity C. Egg cell D. Heat is released by the condensation of D. Both B and C water vapor Get more Free LET Reviewers @ www.teachpinas.com 29.Which plant has underground stem A. Pleura modified for reproduction? B. Meninges A. Ginger C. Peritoneum B. Camote D. Pericardium C. Tubers D. Strawberry 37. What is that 3-carbon sugar formed during the dark reaction phase of the photosynthesis? 30.Which of the following structures serve as a A. ADP passageway of food and air? B. NADPH A. Epiglottis C. ATP B. Trachea D. PGAL C. Pharynx D. Larynx 38. What is the product of carbohydrate digestion? 31.Which kind of relationship is exhibited by A. Fatty acid algae and fungi in lichen? B. Glucose A. Commensalism C. Amino acid B. Parasitism D. Nucleic acid C. Symbiosis D. Competition 39. What process is responsible for the upward movement of the water in very tall trees? 32.What do you call the finger-like folds on the A. Osmosis inner linings of the small intestine? B. Capillary action A. Villi C. Turgor pressure B. Appendix D. Transpiration C. Rugae D. Cecum 40.What is the enzyme in the mouth that breaks starch to maltose? 33. Aside from ADP, what else is the end A. Peptidase production of the dark-reaction phase of B. Ptyalin photosynthesis? C. Pepsin A. Carbon dioxide D. Maltase B. Sugar C. Carbon 41.What do you call the types of symmetry D. Starch where the body parts are paired on either side of the body? 34.What is that flap-like structure that A. Dorsal prevents the food from going the wrong way B. Bilateral during swallowing? C. Radial A. Epiglottis D. Ventral B. Larynx C. Esophagus 42.Which is considered as the respiratory D. Pharynx center of the brain? A. Cerebellum 35. Which pigment is dominant in red algae? B. Medulla oblongata A. Phycocyanin C. Cerebrum B. Fucoxanthin D. Thalamus C. Chlorophyll D. Pharynx 43.Which stage of incomplete metamorphism is undergone by grasshopper? 36. What is the membrane that surrounds the A. Nymph, pupa, adult lungs? B. Egg, larva, pupa, adult Get more Free LET Reviewers @ www.teachpinas.com C. Egg, nymph, adult D. Sternum D. Egg, pupa, adult 44.Which of the following is NOT part of the thoracic cage? A. Clavicle B. Ribs C. Costal cartilages D. Sternum 45.Where does the toxin substance secreted by bees and ants through their sting originate? A. Silk glands B. Intestines C. Rectal glands D. Salivary glands 46.What is the longest bone in the body? A. Humerus B. Ferum C. Tibia-fibula D. Clavicle 47.Which cause our bones to turn brittle and easily break? A. Turning into muscle tissues B. Increase in flexibility C. Turbidity decrease D. Removal of collagen 48. How many bones does an adult human body has? A. 201 B. 200 C. 217 D. 206 49. What do you call automatic responses to an external stimulus? A. Reflex B. Instinct C. Impulse D. All of these 50.What structure provides flexible support and protection to the spinal cord? A. Skull B. Ribs C. Vertebral column Get more Free LET Reviewers @ www.teachpinas.com Biology Part 1 Answer Keys 29. C 1. D 30. C 2. C 31. C 3. C 32. A 4. A 33. B 5. A 34. A 6. C 35. D 7. D 36. D 8. A 37. D 9. A 38. B 10. A 39. B 11. C 40. B 12. C 41. B 13. C 42. B 14. B 43. C 15. D 44. A 16. B 45. C 17. A 46. B 18. D 47. D 19. B 48. D 20. A 49. A 21. D 50. C 22. B 23. B 24. C 25. A 26. C 27. C 28. A