Take Another Quiz

Chapter 7 Test File Questions

16 Questions
File Management Quizzes & Trivia

Biology test file questions for the textbook Life

Questions and Answers
  • 1. 
    1. ATP is
    • A. 

      A. a short-term energy-storage compound.

    • B. 

      B. the cell’s principal compound for energy transfers.

    • C. 

      C. synthesized within mitochondria.

    • D. 

      D. the molecule all living cells rely on to do work.

    • E. 

      E. All of the above

  • 2. 
    2. Which of the following statements about metabolic pathways is false?
    • A. 

      A. The product of one reaction becomes the reactant for the next reaction.

    • B. 

      B. They are a series of enzyme-catalyzed reactions.

    • C. 

      C. Almost all are anabolic.

    • D. 

      D. They are similar in all organisms.

    • E. 

      E. Many are compartmentalized in eukaryotes.

  • 3. 
    3. Which of the following statements about metabolic pathways is true?
    • A. 

      A. Complex chemical transformations in the cell occur in a single reaction.

    • B. 

      B. Each reaction requires oxygen.

    • C. 

      C. In eukaryotes they occur in the cytoplasm.

    • D. 

      D. They vary from organism to organism.

    • E. 

      E. Each one is regulated by specific enzymes.

  • 4. 
    4. When a molecule loses hydrogen atoms (as opposed to hydrogen ions), it becomes
    • A. 

      A. reduced.

    • B. 

      B. oxidized.

    • C. 

      C. redoxed.

    • D. 

      D. hydrogenated.

    • E. 

      E. hydrolyzed.

  • 5. 
    5. In the conversion of succinate to fumarate, hydrogen atoms are transferred to FAD. The conversion of succinate and FAD to fumarate and FADH2 is an example of
    • A. 

      A. hydrolysis.

    • B. 

      B. an allosteric reaction.

    • C. 

      C. a metabolic pathway.

    • D. 

      D. an aerobic reaction.

    • E. 

      E. a redox reaction.

  • 6. 
    6. The oxidation of malate to oxaloacetate is coupled to the reduction of NAD+ to NADH + H+. NAD+ is a(n)
    • A. 

      A. reducing agent.

    • B. 

      B. oxidizing agent.

    • C. 

      C. vitamin.

    • D. 

      D. phosphate ester.

    • E. 

      E. phosphorylating agent.

  • 7. 
    7. Which of the following processes occurs when oxygen is unavailable?
    • A. 

      A. Pyruvate oxidation

    • B. 

      B. The citric acid cycle

    • C. 

      C. Fermentation

    • D. 

      D. An electron transport chain

    • E. 

      E. All of the above

  • 8. 
    8. In all cells, glucose metabolism begins with
    • A. 

      A. glycolysis.

    • B. 

      B. fermentation.

    • C. 

      C. pyruvate oxidation.

    • D. 

      D. the citric acid cycle.

    • E. 

      E. chemiosmosis.

  • 9. 
    9. When NADH donates two electrons to ubiquinone during respiration, ubiquinone is
    • A. 

      A. reduced.

    • B. 

      B. oxidized.

    • C. 

      C. phosphorylated.

    • D. 

      D. aerobic.

    • E. 

      E. hydrolyzed.

  • 10. 
    10. The end product of glycolysis is
    • A. 

      A. pyruvate.

    • B. 

      B. the starting point for pyruvate oxidation.

    • C. 

      C. the starting point for the fermentation pathway.

    • D. 

      D. Both a and b

    • E. 

      E. All of the above

  • 11. 
    11. Which of the following oxidizes other compounds by gaining free energy and hydrogen atoms and reduces other compounds by giving up free energy and hydrogen atoms?
    • A. 

      A. Vitamins

    • B. 

      B. Adenine

    • C. 

      C. ATP

    • D. 

      D. NAD

    • E. 

      E. Riboflavin

  • 12. 
    12. The function of NAD+ is to
    • A. 

      A. cause the release of energy to adjacent cells when energy is needed in aerobic conditions.

    • B. 

      B. hasten the release of energy when the cell has been deprived of oxygen.

    • C. 

      C. carry hydrogen atoms and free energy from compounds being oxidized and to give hydrogen atoms and free energy to compounds being reduced.

    • D. 

      D. block the release of energy to adjacent cells.

    • E. 

      E. None of the above

  • 13. 
    13. NAD
    • A. 

      A. is a key electron carrier in redox reactions.

    • B. 

      B. requires oxygen to function.

    • C. 

      C. is found only in prokaryotes.

    • D. 

      D. binds with an acetyl group to form acetyl CoA.

    • E. 

      E. detoxifies hydrogen peroxide.

  • 14. 
    14. In the cell, the site of oxygen utilization is the
    • A. 

      A. nucleus.

    • B. 

      B. chloroplast.

    • C. 

      C. endoplasmic reticulum.

    • D. 

      D. mitochondrion.

    • E. 

      E. cytosol.

  • 15. 
    15. In the first reaction of glycolysis, glucose receives a phosphate group from ATP. This reaction is
    • A. 

      A. respiration.

    • B. 

      B. a redox reaction.

    • C. 

      C. exergonic.

    • D. 

      D. endergonic.

    • E. 

      E. fermentation.

  • 16. 
    16. During the energy-priming portion of glycolysis, the phosphates from ATP molecules are
    • A. 

      A. added to the first and sixth carbons.

    • B. 

      B. added to the second and fourth carbons.

    • C. 

      C. wasted, as an energy investment.

    • D. 

      D. used to make pyruvate.

    • E. 

      E. used to make lactate.

Related Topics