Study Exam ch 1-9 11 12

Study Exam ch 1-9 11 12 - 11 Semester Final Exam Study...

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1 1 st Semester Final Exam Study Guide (excluding DNA/protein synthesis) Identify the choice that best completes the statement or answers the question. Use the following information to answer the following questions. Succinate dehydrogenase catalyzes the conversion of succinate to fumarate. The reaction is inhibited by malonic acid, which resembles succinate but cannot be acted upon by succinate dehydrogenase. Increasing the ratio of succinate to malonic acid reduces the inhibitory effect of malonic acid. 1. Based on this information, which of the following is correct? a) Succinate dehydrogenase is the enzyme, and fumarate is the substrate. b) Succinate dehydrogenase is the enzyme, and malonic acid is the substrate. c) Succinate is the substrate, and fumarate is the product. d) Fumarate is the product, and malonic acid is a noncompetitive inhibitor. e) Malonic acid is the product, and fumarate is a competitive inhibitor. 2. What is the purpose of using malonic acid in this experiment? a) It is a competitive inhibitor. b) It blocks the binding of fumarate. c) It is a noncompetitive inhibitor. d) It is able to bind to succinate. e) It replaces the usual enzyme. 3. Which of the following triggers the cell's passage past the G2 checkpoint into mitosis? a) PDGF b) MPF c) protein kinase d) cyclin e) Cdk 4. All of the following statements concerning saturated fats are true except a) They are more common in animals than in plants. b) They have multiple double bonds in the carbon chains of their fatty acids. c) They generally solidify at room temperature. d) They contain more hydrogen than saturated fats having the same number of carbon atoms. e) They are one of several factors that contribute to atherosclerosis. 5. Grana, thylakoids, and stroma are all components found in a) vacuoles. b) chloroplasts. c) mitochondria. d) lysosomes. e) nuclei.
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6. Which of the following store and transmit hereditary information? a) carbohydrates b) lipids c) proteins d) nucleic acids 7. When hydrogen ions are pumped from the mitochondrial matrix across the inner membrane and into the intermembrane space, the result is the a) formation of ATP. b) reduction of NAD. c) restoration of the Na/K balance across the membrane. d) creation of a proton gradient. e) lowering of pH in the mitochondrial matrix. 8. If there are 20 chromatids in a cell, how many centromeres are there? a) 10 b) 20 c) 30 d) 40 e) 80 9. DNA is replicated at this time of the cell cycle: a) G O b) G 1 c) S d) G 2 e) M 10. Pure, freshly-distilled water has a pH of 7. This means that a) there are no H ions in the water. b) there are no OH ions in the water. c) the concentration of H ions in the water equals the concentration of OH ions in the water. d) the concentration of H ions in the water is 7 times the concentration of OH ions in the
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This note was uploaded on 02/28/2010 for the course BIO 50050 taught by Professor Batterton during the Fall '09 term at University of Texas.

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Study Exam ch 1-9 11 12 - 11 Semester Final Exam Study...

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