EHS CP Biology Midterm Exam 2015 PDF

**EHS CP Biology Midterm Exam 2015** **Multiple Choice** *Identify the choice that best completes the statement or answers the question.* \_\_\_\_    1.   How do scientific theories compare to hypotheses? a. Theories are the same as hypotheses. ---- ----------------------------------------...

**EHS CP Biology Midterm Exam 2015** **Multiple Choice** *Identify the choice that best completes the statement or answers the question.* \_\_\_\_    1.   How do scientific theories compare to hypotheses? a. Theories are the same as hypotheses. ---- --------------------------------------------------------------------- b. Theories unify a broad range of observations and hypotheses. c. Hypotheses combine the ideas of several theories to explain events. d. Hypotheses are the dominant view among scientists. \_\_\_\_    2.   All of the following are characteristics of all living things **[except]**? a. growth and development ---- ----------------------------- b. ability to move c. response to the environment d. ability to reproduce \_\_\_\_  3.   Which of the following characteristics of living things best explains why some North American birds fly south for the winter? a. Living things respond to their environment. ---- ------------------------------------------------------ b. Living things maintain internal balance. c. Living things are made up of units called cells. d. Living things are based on a universal genetic code. \_\_\_\_  4.   The three subatomic particles that make up atoms are a. protons, neutrons, and isotopes. ---- ------------------------------------- b. neutrons, isotopes, and electrons. c. positives, negatives, and neutrals. d. protons, neutrons, and electrons. \_\_\_\_  5.   The amount of NaCl present in the water to which seeds are exposed will cause them to germinate at different rates.  NaCl is a substance formed by the chemical joining of two or more elements in definite amounts.  Based on this, NaCl is an example of which of the following? a. compound ---- ---------- b. isotope c. nucleus d. atom \_\_\_\_  6.   Which of the following makes up a molecule of water? a. one atom of hydrogen and one atom of oxygen ---- ---------------------------------------------- b. one atom of sodium and one atom of chlorine c. one atom of hydrogen and two atoms of oxygen d. two atoms of hydrogen and one atom of oxygen \_\_\_\_  7.   A covalent bond is formed as the result of a. transferring electrons. ---- ------------------------- b. sharing electrons. c. transferring protons. d. sharing protons. \_\_\_\_  8.   Valence electrons are located in the outermost energy level. What is the importance of these electrons? a. They account for the majority of the atomic mass. ---- ----------------------------------------------------------- b. They determine atomic number. c. They are involved in forming chemical bonds. d. They vary in number amongst isotopes of the same element. \_\_\_\_  9.   The properties of water, including cohesion, adhesion and high specific heat, are a result of what? a. ionic bonds forming between hydrogen and oxygen in a water molecule ---- -------------------------------------------------------------------------------- b. an unequal sharing of electrons between hydrogen and oxygen atoms in water c. the presence of both hydrophobic and hydrophilic parts within a water molecule d. oxygen atom is slightly positive and the hydrogen atoms are slightly negative https://lh3.googleusercontent.com/2X1ZrEqyOhCWk1L9Kexsjf1UfyhVcZcE6mcLOq6A90McNWAOQAE5JF8tlxCgaxllkwItG79zHgeTYg3Qu8JztGsUTeUZ51kmMSf\_21pv\_QMLm0-lZZoLzs-9b9GpaRVtXZARYVIe **Figure 2--2** \_\_\_\_  10.   What kinds of atoms are bonded to carbon atoms in the molecule shown in Figure 2--2? a. helium, oxygen, and nitrogen ---- ---------------------------------------- b. calcium, hydrogen, and oxygen c. carbon, hydrogen, oxygen, and nitrogen d. helium, carbon, and sodium \_\_\_\_  11.   The relationship between an amino acid and a protein is the same as the relationship between which of the following: a. fat and lipid. ---- ------------------------------------------------------------ b. DNA and  RNA. c. sugar and fat. d. simple sugar (monosaccharide) and starch (polysaccharide). \_\_\_\_  12.   Which of the following is a polymer? a. a glucose molecule ---- -------------------- b. an amino acid c. a nucleotide d. a protein \_\_\_\_  13.   Identify the reactant(s) in the chemical reaction, CO~2~ + H~2~O → H~2~CO~3~. a. CO~2~, H~2~O, and H~2~CO~3~ ---- ----------------------------- b. CO~2~ and H~2~O c. H~2~CO~3~ d. CO~2~ \_\_\_\_  14.   What is the process that rearranges the atoms of reactants into products? a. cohesion ---- ------------------- b. hydrogen bonding c. chemical reaction d. dissolving \_\_\_\_  15.   The energy needed to get a chemical reaction started is the a. thermal energy. ---- -------------------- b. activation energy. c. kinetic energy. d. chemical energy. \_\_\_\_  16.   Any substance that speeds up the rate of a chemical reaction is called a. a catalyst. ---- ------------- b. a lipid. c. a molecule. d. an element. \_\_\_\_  17.   Enzymes are biological catalysts that affect the reactions in living cells by.... a. changing the products of the reaction. ---- ---------------------------------------- b. lowering activation energy. c. increasing the pH of the reaction. d. stopping the reaction from completing. \_\_\_\_  18.   What advance in technology made the discovery of cells possible? a. the centrifuge ---- -------------------------- b. the particle accelerator c. the ultraviolet light d. the microscope \_\_\_\_  19.   Which of the following is **NOT** a principle of the cell theory? a. Cells are the basic units of life. ---- --------------------------------------------- b. All living things are made of cells. c. Very few cells are able to reproduce. d. All cells are produced from existing cells. \_\_\_\_  20.   Which of the following enclose their DNA in a nucleus? a. prokaryotes ---- ------------- b. bacteria c. eukaryotes d. viruses \_\_\_\_  21.   Which organelle breaks down wastes and organelles that are no longer useful? a. golgi apparatus ---- ----------------------- b. lysosome c. endoplasmic reticulum d. mitochondrion \_\_\_\_  22.   Which of the following is a function of the cytoskeleton? a. helps a cell keep its shape ---- ------------------------------- b. contains DNA c. is the powerhouse of the cell d. helps make proteins **Figure 7--2** \_\_\_\_  23.   Which structure in the cell shown in Figure 7--2 above stores materials, such as water, salts, proteins, and carbohydrates? a. structure A ---- ------------- b. structure B c. structure C d. structure D \_\_\_\_  24.  The rough endoplasmic reticulum and golgi apparatus work together in eukaryotic cells.  What is one way that the rough endoplasmic reticulum assists the golgi apparatus? a\. it assembles nucleic acids from monomers b\. it breaks down old, damaged macromolecules. c\. it packages new protein molecules into vesicles. d\. it determines which protein  molecules to synthesize \_\_\_\_  25.   Which organelle converts the chemical energy stored in food (glucose) into a useable form of cellular energy (ATP)? a. chloroplast ---- ----------------------- b. golgi apparatus c. endoplasmic reticulum d. mitochondrion \_\_\_\_  26.   Which organelle would you expect to find in plant cells but not animal cells? a. mitochondrion ---- ------------------------------ b. ribosome c. chloroplast d. smooth endoplasmic reticulum \_\_\_\_  27.   The primary function of the cell wall is to a. support and protect the cell. ---- ------------------------------------ b. store DNA. c. direct the activities of the cell. d. help the cell move. \_\_\_\_  28.   The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of? a. carbohydrates ---- --------------- b. lipids c. nucleic acids d. proteins \_\_\_\_  29.   During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will a. move across the membrane to the outside of the cell. ---- ------------------------------------------------------------------------- b. stop moving across the membrane. c. continue to move across the membrane in both directions at equal rates. d. move across the membrane to the inside of the cell. \_\_\_\_ 30.   The diffusion/movement of water across a selectively permeable membrane is called a. endocytosis. ---- ------------------- b. osmosis. c. pinocytosis. d. active transport. \_\_\_\_  31.   An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes a. water to move into the cell. ---- ---------------------------------- b. water to move out of the cell. c. solutes to move into the cell. d. solutes to move out of the cell. \_\_\_\_  32.   Which term describes the relatively constant internal physical conditions of an organism? a. cell specialization ---- --------------------- b. homeostasis c. organ system d. unicellularity \_\_\_\_  33.   Unicellular organisms are a. only able to reproduce sexually. ---- ------------------------------------------------------------ b. larger than those of multicellular organisms. c. able to carry out all of the functions necessary for life. d. unable to respond to changes in their environment. \_\_\_\_  34.   Which list represents the levels of organization in a multicellular organism from the simplest level to the most complex level? a. cell, tissue, organ system, organ ---- ----------------------------------- b. organ system, organ, tissue, cell c. tissue, organ, organ system, cell d. cell, tissue, organ, organ system \_\_\_\_  35.   Compared to small cells, larger cells have more trouble a. dividing. ---- ---------------------------------------------------- b. producing daughter cells. c. replicating their genetic information. d. moving needed materials in and waste products out. \_\_\_\_  36.   Which of the following happens when a cell divides? a. The cell's volume increases. ---- ---------------------------------------------------------------------------- b. It becomes more difficult for the cell to get rid of wastes. c. Each daughter cell receives its own copy of the parent cell's DNA. d. It becomes more difficult for the cell to get enough oxygen and nutrients. \_\_\_\_  37.   The process by which a cell grows, replicates its DNA, and then divides into two daughter cells is called a. the cell cycle. ---- ----------------- b. metaphase. c. interphase. d. translation. \_\_\_\_  38.   When during the cell cycle do chromosomes first become visible? a. interphase ---- ------------ b. metaphase c. prophase d. anaphase \_\_\_\_  39.   During which phase in the cell cycle does mitosis happen? a. G~1~ phase ---- ------------ b. G~2~ phase c. M phase d. S phase \_\_\_\_  40.   Which of the following is a correct statement about the events of the cell cycle? a. the nucleus divides during the G~1~ and G~2~ phases. ---- ------------------------------------------------------ b. DNA replicates during cytokinesis. c. Mitosis is usually the longest phase. d. Interphase consists of the G~1~, S, and G~2~ phases. --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------  -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- **Figure 10--3** \_\_\_\_  41.   The division of the nucleus and the cytoplasm is represented in Figure 10--3 by the letter a. A. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ ---- b. B. c. C. d. D. https://lh3.googleusercontent.com/1ZrlkgIAyK93fO25ypfKE6WXOO02SFpJIqOqI6BzG41B8T6r8mZVVQauSA8\_AMLz-kOHZFZ6mxBIz58Bv5gdlDLsKe9t5CjyFEMqq9DNLKn177gnRhTg4KBPYfFItPkfG7Z6\_LEY **Figure 10--5** \_\_\_\_  42.   The structure labeled A in Figure 10--5 is called the a. centromere. ---- ------------------- b. centriole. c. sister chromatid. d. spindle. \_\_\_\_  43.   The structures labeled B in Figure 10--5 are called a. centromeres. ---- -------------------- b. centrioles. c. sister chromatids. d. spindles. \_\_\_\_  44.   Which of the following shows the correct order of the phases of mitosis? a. prophase, metaphase, anaphase, telophase ---- ------------------------------------------- b. anaphase, interphase, prophase, telophase c. metaphase, prophase, telophase, anaphase d. interphase, prophase, metaphase, anaphase \_\_\_\_  45.   During which phase of mitosis do the chromosomes line up along the middle of the dividing cell? a. prophase ---- ----------- b. telophase c. metaphase d. anaphase \_\_\_\_  46.   As a result of mitosis, a parent cell that has four chromosomes will produce two daughter cells, each containing a. two chromosomes. ---- ---------------------- b. four chromosomes. c. eight chromosomes. d. sixteen chromosomes. \_\_\_\_  47.   One difference between cell division in plant cells and in animal cells is that plant cells have a. centrioles. ---- --------------- b. centromeres. c. a cell plate. d. chromatin. \_\_\_\_  48.   Cancer cells form masses of cells called a. tumors. ---- ----------------- b. cyclins. c. growth factors. d. p53. \_\_\_\_  49.   During early development, all cells in the embryo of a multicellular organism are identical. Later on in development, the cells will become specialized through a process called a. apoptosis. ---- ------------------ b. cytokinesis. c. differentiation. d. interphase. \_\_\_\_  50.   The different forms of a gene are called a. cells. ---- --------------- b. pollinations. c. alleles. d. hybrids. \_\_\_\_  51.   When Gregor Mendel crossed a tall plant with a short plant, the F~1~ plants inherited a. one allele from each parent. ---- --------------------------------- b. two alleles from each parent. c. three alleles from each parent. d. four alleles from each parent. \_\_\_\_  52.   If a pea plant's alleles for height are *tt,* what is true of its parents? a. Both parents were tall. ---- ---------------------------------------------- b. Both parents were short. c. Both parents contributed a recessive allele. d. Both parents contributed a dominant allele. \_\_\_\_  53.   A tall plant (*TT*) is crossed with a short plant (*tt*). If the resulting tall F~1~ pea plants are allowed to self-pollinate, a. the offspring will be of medium height. ---- ----------------------------------------- b. all of the offspring will be tall. c. all of the offspring will be short. d. the offspring can be tall or short. \_\_\_\_  54.   Organisms that have two identical alleles for a particular trait are said to be a. hybrid. ---- --------------- b. homozygous. c. heterozygous. d. dominant. \_\_\_\_  55.   What principle states that "during gamete formation, genes for different traits separate without influencing each other's inheritance"? a. principle of dominance ---- ------------------------------------- b. principle of independent assortment c. principle of probabilities d. principle of segregation +---------+---------+---------+---------+---------+---------+---------+ | ***RrYy | | | | | | | | *** | | | | | | | +=========+=========+=========+=========+=========+=========+=========+ | | | ***RY** | ***Ry** | ***rY** | ***ry** | | | | | * | * | * | * | | +---------+---------+---------+---------+---------+---------+---------+ | | ***RY** | ***RRYY | ***RRYy | ***RrYY | ***RrYy | **Seed | | | * | *** | *** | *** | *** | Shape** | | | | | | | | | | | | | | | | ***R =* | | | | | | | | Round** | | | | | | | | | | | | | | | | ***r =* | | | | | | | | Wrinkle | | | | | | | | d** | +---------+---------+---------+---------+---------+---------+---------+ | ***RrYy | ***Ry** | ***RRYy | ***RRyy | ***RrYy | ***Rryy | **Seed | | *** | * | *** | *** | *** | *** | Color** | | | | | | | | | | | | | | | | ***Y =* | | | | | | | | Yellow* | | | | | | | | * | | | | | | | | | | | | | | | | ***y* = | | | | | | | | Green** | +---------+---------+---------+---------+---------+---------+---------+ | | ***rY** | ***RrYY | ***RrYy | ***rrYY | ***rrYy | | | | * | *** | *** | *** | *** | | +---------+---------+---------+---------+---------+---------+---------+ | | ***ry** | ***RrYy | ***Rryy | ***rrYy | ***rryy | | | | * | *** | *** | *** | *** | | +---------+---------+---------+---------+---------+---------+---------+ **Figure 11--2** \_\_\_\_  56.   The Punnett square in Figure 11--2 shows that the gene for pea shape and the gene for pea color a. assort independently. ---- ------------------------ b. are linked. c. have the same alleles. d. are always homozygous. \_\_\_\_  57.   How many different allele combinations would be found in the **gametes** produced by a pea plant whose genotype was TtRR? a. 2 ---- ---- b. 4 c. 8 d. 16 ***RrYy*** ***RRYy*** ------------ ------------ ---------- ---------- ---------- ---------- ***RY*** ***Ry*** ***RY*** ***Ry*** ***RY*** *RRYY* *RRYy* *RRYY* *RRYy* ***Ry*** *RRYy* *RRyy* *RrYy* *RRyy* ***rY*** *RrYY* *RrYy* *RrYY* *RrYy* ***ry*** *RrYy* *Rryy* *RrYy* *Rryy* **Figure 11--3** \_\_\_\_  58.   Use Figure 11--3 to answer the following question. If a pea plant that is heterozygous for round, yellow peas (*RrYy*) is crossed with a pea plant that is homozygous for round peas but heterozygous for yellow peas (*RRYy*), how many different phenotypes are their offspring expected to show? a. 2 ---- ---- b. 4 c. 8 d. 16 \_\_\_\_ 59.   Human females produce **haploid** egg cells that have\... a. one X chromosome. ---- ----------------------------- b. two X chromosomes. c. one Y chromosome. d. one X and one Y chromosome.  **Figure 14--1** \_\_\_\_ 60.   According to Figure 14--1, what is the approximate probability that a human offspring will be female? a. 10% ---- ----- b. 25% c. 50% d. 75% \_\_\_\_ 61.   If a man with blood type A and a woman with blood type O produce an offspring, what might be the offspring's blood type? a. AB or O ---- ----------- b. A,B, or O c. A or O d. AB only \_\_\_\_ 62.   If a woman with blood type A and a man with type B blood had children with blood types AB, O, A, and B, what were the genotypes of the parents? a. I^A^I^B^  ,  i i ---- --------------------- b. I^A^i  ,   i i c. I^B^i ^  ^,   i i d. I^A^i ^  ^,   I^B^i \_\_\_\_  63.   Situations in which one allele for a gene is not completely dominant over another allele for that gene are called a. multiple alleles. ---- ------------------------ b. incomplete dominance. c. polygenic inheritance. d. multiple genes. \_\_\_\_  64.  Blood type AB is an example of a. incomplete dominance. ---- ----------------------- b. codominance. c. polygenic traits. d. sex-linked traits. \_\_\_\_  65.   The arctic fox is blue-gray in the summer and white in the winter. What most likely influence(s) this change? a. genes and the environment ---- --------------------------- b. dominant alleles c. sex-linkage d. codominant alleles \_\_\_\_  66.   The number of chromosomes in a gamete is represented by the symbol a. n. ---- ----- b. 2n. c. 3n. d. 4n. \_\_\_\_  67.   If an organism's diploid number is 12, its haploid number is a. 12. ---- ----- b. 6. c. 24. d. 3. \_\_\_\_  68.   Gametes have a. homologous chromosomes. ---- ------------------------------------------------------ b. twice the number of chromosomes found in body cells. c. two sets of chromosomes. d. one set of chromosomes. \_\_\_\_  69.   Gametes are produced by the process of a. mitosis. ---- ---------------- b. meiosis. c. crossing-over. d. replication. https://lh6.googleusercontent.com/4jTtuFXZr0s2LjhIivcvT57AKc5sH8iWjRM8GJWNoYBF4NEPfVvXsL0dQdiOGN8N6\_NsLlB4OR-UMFfcSCdhxBjBploAfHin\_jJRal9nNQUbpEym1lWHaoQezEl3oVcQO1k1fKKZ **Figure 11--4** \_\_\_\_  70.   What is shown in Figure 11--4? a. independent assortment ---- ------------------------ b. anaphase I of meiosis c. crossing-over d. replication \_\_\_\_  71.   Chromosomes form tetrads during a. prophase I of meiosis. ---- ------------------------- b. metaphase I of meiosis. c. interphase. d. anaphase II of meiosis. \_\_\_\_  72.   Unlike mitosis, meiosis results in the formation of a. diploid cells. ---- -------------------- b. haploid cells. c. 2N daughter cells. d. body cells. \_\_\_\_  73.   What molecule stores hereditary information in a cell? a. proteins ---- --------------- b. carbohydrates c. lipids d. DNA  **Figure 12--2** \_\_\_\_  74.   Figure 12--2 shows the structure of a. a DNA molecule. ---- ----------------- b. an amino acid. c. a RNA molecule. d. a protein. \_\_\_\_  75.   In figure 12-2 structure "X" represents a monomer of the biomolecule shown.  What is the name of this monomer? a. a nucleotide ---- ------------------- b. a phosphate group c. a nitrogen base d. a sugar \_\_\_\_  76.   Because of base pairing in DNA, the percentage of\... a. adenine molecules in DNA is about equal to the percentage of guanine molecules. ---- ------------------------------------------------------------------------------------- b. thymine molecules in DNA is about equal to the percentage of adenine molecules c. adenine molecules in DNA is much greater than the percentage of thymine molecules. d. cytosine molecules in DNA is much greater than the percentage of guanine molecules. \_\_\_\_  77.   Which scientist(s) are credited with figuring out that the shape of a DNA molecule is a double helix? a. Hershey and Chase ---- ------------------- b. Griffith c. Watson and Crick d. Avery \_\_\_\_  78.   Which of the following forms a base pair with guanine? a. deoxyribose ---- ------------- b. adenine c. guanine d. cytosine https://lh4.googleusercontent.com/leZoMMD8Z2duljjjHQLweC70qPRH7Qr2rtxzdPOQ1d4alnuGEsewcyuRnfiLb3mUPYhiZADyMvaqKnCHzH7tGp0vJ-E8MsGFvbOW0C5OyEGez4VPW5LW6PryZ4V8WO0GEmrbaIvD         Figure 12-15 \_\_\_\_  79.  Figure 12-15 shows DNA replication which results in two DNA molecules\... a. each with two daughter strands. ---- ---------------------------------------------------------------------- b. one with two daughter strands and the other with two parent strands. c. each with one daughter strand and one parent strand. d. each with two parent strands. \_\_\_\_  80.   During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases a. TCGAAC. ---- --------- b. GATCCA. c. AGCTTG. d. GAUCCA. \_\_\_\_  81.   In prokaryotes, DNA a. is located in the nucleus. ---- ------------------------------------ b. is located in the mitochondria. c. is located in the ribosomes. d. is free floating in the cytoplasm. \_\_\_\_  82.   In both prokaryotes and eukaryotes, DNA replication happens a. before cell division. ---- ----------------------- b. in the nucleus. c. during metaphase. d. around the histones.  **Figure 13--1** \_\_\_\_  83.   Which nucleotide in Figure 13--1 indicates the nucleic acid above is RNA? a. uracil ---- ---------- b. guanine c. cytosine d. adenine \_\_\_\_  84.   Which of the following is true? a. RNA is usually single-stranded. ---- --------------------------------- b. DNA is usually single-stranded. c. DNA contains uracil. d. RNA contains thymine. \_\_\_\_  85.   The Central Dogma suggests that information flows in the following order. a. RNA to DNA to protein ---- ----------------------- b. protein to RNA to DNA c. DNA to RNA to protein d. DNA to protein to RNA \_\_\_\_  86.   Which type of RNA brings the information in the genetic code from the nucleus to the ribosome? a. rRNA ---- ---------------- b. tRNA c. mRNA d. RNA polymerase \_\_\_\_  87.   What is produced during transcription? a. RNA molecules ---- ------------------- b. DNA molecules c. lipid molecules d. protein molecules https://lh5.googleusercontent.com/VK3gfautzsLIQ5nVQa0hEaM6y-gNSisVrS2LrjVceQ4YY4nwTP2SuEge6T8TZ7Oy48p\_mt00\_EJRcujRtZMxr6O9PEJjGu343YHa8QFmWYbm9A4ELQNWXBXYpFbWMn7-V8TDcwRJ **Figure 13--3** \_\_\_\_  88.   In Figure 13--3, which amino acid is specified by the mRNA code CCC? a. Gly ---- ----- b. Lys c. Ala d. Pro \_\_\_\_ 89.   During translation, which of the following are produced? a. RNA molecules ---- ------------------- b. DNA molecules c. lipid molecules d. protein molecules \_\_\_\_ 90.   During translation, the type of amino acid that is added to the growing polypeptide depends on the a. codon on the mRNA and the anticodon on the rRNA. ---- ------------------------------------------------------ b. anticodon on the mRNA and the anticodon on the tRNA. c. anticodon on the rRNA and the codon on the mRNA. d. codon on the mRNA and the anticodon on the tRNA. Answer the Free Response Questions\... **BIOLOGY I, CP** **Midterm Exam** **FREE RESPONSE** **QUESTION 1:        Answer all parts of this free response in complete sentences.** *Read the passage below and then use the diagram below to answer the following questions in the space provided.* A scientist conducted an experiment to determine the effect of temperature on the fur color of a Himalayan rabbit. The Himalayan rabbit typically has a white coat except for its **colder** nose, feet, tail, and ears, which are black. The scientist shaved an area of hair on the back of each rabbit, then placed an ice pack over the shaved area on one (rabbit A).                 Figure 1--1 **1.** In Figure 1--1, which rabbit is the control? (rabbit A or rabbit B) [                                                                                                                             ] **2.** In Figure 1--1, what is the independent variable in this experiment and explain how you know? [    ­­­­­­­­­­­­] **­­** **3.** What question/problem is the scientist trying to answer/solve about Himalayan rabbits? **4.** Before completing the experiment in Figure 1--1, the scientist made a hypothesis. What is the hypothesis the scientist is testing? **5.** Based on your observations of Figure 1--1, conclude what effect temperature has on Himalayan rabbits. **BIOLOGY I, CP** **Midterm Exam** **FREE RESPONSE** **QUESTION 1:        Answer all parts of this free response in complete sentences.** ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- https://lh6.googleusercontent.com/VqLjvLNOquRFZxmk77TrXTBkk4ed\_u0NL00f3AoXd67nwXNpADVD3m73r2bccMybVihrs55ENMsCZ0cwz84jdojENwsVL5UvlVpV-ie8GU778aiG2umJZNyKRfj9bXSQkU2ahCZw  ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- **A student prepared a beaker with sprigs of a water plant as diagrammed above. The beaker was placed 5 cm. from a fluorescent lamp. The lamp was systematically moved away from the beaker. Analyze the graph above to answer the following questions.** 1\.        What is the independent variable in this experiment? 2\.       What question/problem is the scientist trying to answer/solve about the water plant? 3\.    What gas do you think makes up the air bubbles given off by the plant? 4\.   Based on the information in the graph, write a conclusion. 5\.    Explain your reason for choosing the gas you named in your answer to question 3. **BIOLOGY I, CP** **Midterm Exam** **FREE RESPONSE** **QUESTION 2:        Answer all parts of this free response in complete sentences.** https://lh6.googleusercontent.com/tWT0f1wXw8HnGymQs-jfdBCUfRgyDPtMLF9jbHPGjpUUbExuOTErQkBDJUM5kE8WbEHClfjttzCkh7S2eLTnfMJmQpYibFIQ7IdM-S0GFo-2ItMeGGGDmg0JQGh5ncTurXjlU3fK **Figure 5-1** 1. According to Figure 5-1, which enzyme is most effective at a temperature of 42°C? 2. 3. 4. 5. **QUESTION 3:            Answer all parts of this free response in complete sentences.** The diagram below shows a model of a cell in it's environment.  It includes a beaker containing a solution and a dialysis bag containing a solution with a different concentration. The first beaker, on the left, shows the original concentrations and appearance of the beaker and dialysis bag. The beaker solution was 80% water and 20% starch. The solution in the bag was 90% water and 10% starch. The second part of the diagram shows the same beaker and dialysis bag after 12 hours. The dialysis bag is semipermeable.  Use your knowledge of cellular transport to answer the questions below. ** ** 1\.   What does selectively permeable mean? 2\.  What substance is moving across the dialysis bag membrane? 3\.  What type of solution was the dialysis bag placed in? 4\.  Explain your reasoning for your answer to question 2. 5\.  If the same dialysis bag (containing 10% starch) was placed in a solution containing 5% starch & 95% water, what would happen to the volume of the dialysis bag? Why?