9.  Which of the following statements about the composition of starch is TRUE? (Points : 4)

       a. Starch is a polymer of amylose and amylopectin.

      b.  Starch is a branched polymer found in plants.

     c.  Amylase is the enzyme that degrades starch.

     d.  All of the above

Question 10.

10. (TCO 6) Which of the following statements is a correct description of the term “catabolism”? (Points : 4)

       a. The term catabolism is defined as the sum of all reactions in a cell.

       b. The term catabolism describes the reactions that are subject to regulation.

      c. The term catabolism describes the synthetic reactions in a cell.

      d. The term catabolism describes the degradative reactions in a cell.

Question 11.

11. (TCO 6) Which of the following statements is a correct description of the term “metabolism”? (Points : 4)

      a. The term metabolism is defined as the sum of all reactions in a cell.

      b. The term metabolism describes the reactions that are subject to regulation.

      c. The term metabolism describes the synthetic reactions in a cell.

       d. The term metabolism describes the degradative reactions in a cell.

Question 12.

12. (TCO 7) Which of the following statements about anaerobic respiration in animal cells is TRUE? (Points : 4)

      a.  Pyruvate is converted to alcohol in animal cells.

      b. It occurs in absence of oxygen.

      c. One of the enzymes involved is alcohol dehydrogenase.

      d. All of the above

Question 13.

13. (TCO 7) The following coenzyme is used for lipid biosynthesis, which is _____ in the process. (Points : 4)

      a. NADP⁺; Reduced

      b. NADPH; Oxidized

     c.  NAD⁺; Reduced

     d.  NAD⁺; Oxidized

Question 14.

14. (TCO 7) Which of the following is the number of ATP produced per molecule of stearic acid? (Points : 4)

      a. 32 ATP

      b. 120 ATP

      c. 240 ATP

     d.  55 ATP

Question 15.

15. (TCO 7) Which of the following describes the function of coenzyme A in lipid metabolism? (Points : 4)

      a. Coenzyme A is crucial in lipid storage.

      b. Coenzyme A is crucial in lipid uptake by cells.

      c. Coenzyme A is needed to charge the lipid before it participates in metabolism such as Acetyl CoA.

      d. None of the above

Question 16.

16. (TCO 9) Which of the following is a product of nitrogen catabolism in fish? (Points : 4)

     a.  Pyruvate

     b.  Urea

     c.  Allantoin

     d.  Ammonium ion

Question 17.

17. (TCO 9) Which of the following is true for purine synthesis? (Points : 4)

      a. Nitrogen is supplied by glycine, aspartate, and glutamine.

     b.  Carbon is supplied by N-Formyl tetrahydrofolate.

      c. Carbon is supplied by glycine and CO_2.

     d.  All of the above

Question 18.

18. (TCO 9) Which of the following molecules plays crucial roles in the feedback inhibition of nitrogen metabolism? (Points : 4)

     a.  Glutamate

     b.  Urea

     c.  Allantoin

      d.  Ammonium ion

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