CHP 9 BIO QUIZ

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cuz213022
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112666
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CHP 9 BIO QUIZ
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2011-10-27 16:34:47
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CHP BIO QUIZ
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CHP 9 BIO QUIZ
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  1. Which of the following statements concerning the breakdown of glucose to CO2 and water is (are) true?
    A. A,B, and C are correct
    B. An electron acceptor is called the reducing agent
    C. A and B only are correct
    D. Adding electrons to another substance is known as reduction
    E. The breakdown of glucose is exergonic
    A. A, B, and C are correct
    (this multiple choice question has been scrambled)
  2. Which kind of metabolic poison would most directly interfere with glycolysis?
    A. an agent that reacts with oxygen and depletes its concentration in the cell
    B. an agent that reacts with NADH and oxidizes it to NAD+
    C. an agent that binds to pyruvate and inactivates it
    D. an agent that inhibits the formation of acetyl coenzyme A
    E. an agent that closely mimics the structure of glucose but is not metabloized
    E. an agent that closely mimics the structure of glucose but is not metabolized
    (this multiple choice question has been scrambled)
  3. All of the following substances are produced in a muscle cell under anaerobic conditions except
    A. ATP
    B. acetyl CoA
    C. pyruvate
    D. NADH
    E. lactate
    B. acetyl CoA
    (this multiple choice question has been scrambled)
  4. All of the following are functions of the Krebs cycle except
    A. production of FADH2
    B. production of ATP
    C. adding electrons and protons to oxygen to form water
    D. release of carbon dioxide
    E. production of NADH
    C. adding electrons and proton to oxygen to form water
    (this multiple choice question has been scrambled)
  5. The Krebs cycle produces which of the following molecules that then transfer energy to the electron transport system?
    A. NADH, FADH2, and ATP
    B. FADH2 and NADH
    C. NADH and ATP
    D. ATP and CO2
    E. CO2 and FAD
    B. FADH2 and NADH
    (this multiple choice question has been scrambled)
  6. During oxidative phosphorylation, H2O is formed. Where do the oxygen atoms in the H2O come from?
    A. carbon dioxide
    B. glucose
    C. molecular oxygen
    D. pyruvate
    E. lactate
    C. molecular oxygen
    (this multiple choice question has been scrambled)
  7. During aerobic respiration, electrons travel downhill in which sequence?
    A. food--> NADH-->electron transport chain-->oxygen
    B. food--> Krebs cycle-->ATP-->NAD+
    C. good--> glycolysis--> Krebs cycle--> NADH--> ATP
    D. glucose-->ATP-->oxygen
    E. glucose-->ATP--> electron transport chain--> NADH
    A. food--> NADH-->electron transport chain-->oxygen
    (this multiple choice question has been scrambled)
  8. During aerobic cellular respiration, a proton gradient in mitochondria will be generated by__________and used primarily for___________.
    A. the electron transport chain....ATP synthesis
    B. diffusion of protons....ATP synthesis
    C. fermentation....NAD reduction
    D. the electron transport chain....substrate-level phosphorylatioin
    E. glycolysis....production oh H2O
    A. the electron transport chain....ATP synthesis
    (this multiple choice question has been scrambled)
  9. Phosphofructokinase is an important control enzyme. All of the following statements concerning this enzyme are true except:
    A. it is a regulator of the processes of glycolysis and the Krebs cycle
    B. it is an allosteric enzyme
    C. it is activated by citrate
    D. it is inhibited by ATP
    E. it is activated by ADP (or AMP)
    C. it is activated by citrate
    (this multiple choice question has been scrambled)
  10. Which of the following is not true concerning the cellular compartmentation of the steps of respiration or fermentation?
    A. Acetyl CoA is produced only in the mitochondria
    B. ATP is produced in the cytosol and the mitochondria
    C. Lactate is produced only in the cytosol
    D. FADH2 is pproduced only in the mitochondria
    E. NADH is produced only in the mitochondria
    E. NADH is produced only in the mitochondria
    (this multiple choice question has been scrambled)

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