Final06%20key - ANSWER KEY CORRECT ANSWERS IN BOLD BIBC102...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
ANSWER KEY – CORRECT ANSWERS IN BOLD BIBC102 Spring 2006 FINAL EXAM June 15, 2006 Print and bubble your last name and first name on the back side of the scantron sheet. Print and bubble your ID number on the back side of the scantron sheet. For all questions, choose the single BEST answer from those offered , and enter it onto the appropriate space on the scantron sheet. You must use a number 2 pencil to get the machine to register your answer. If you enter more than one answer for a particular question, that question will be scored as "incorrect". You can keep this question sheet after the exam. The scantron sheet will not be returned. Write your final answer beside each question first , and only then to enter the number on the scantron sheet. That way, you will be more careful in making your entries. Also, you will have a reference to check your answers against the key after the exam. THERE ARE 100 QUESTIONS. PACE YOURSELF. GOOD LUCK! _________________________________________________________________________ QUESTIONS: 1) An endogonic reaction can be made to proceed by A) lowering the temperature B) coupling it to an exergonic reaction C) coupling it to the hydrolysis of ATP D) E) none of the above 2) An exergonic reaction that is readily reversible is most likely to have a G = A) 25 kcal/mol B) 2.5 kcal/mol C) 0 kcal/mol D) -2.5 kcal/mol E) -25 kcal/mol
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3) In amino acid catabolism, the first reaction for many amino acids is: A) decarboxylation. B) hydroxylation. C) oxidative deamination. D) reduction. E) transamination. 4) Cholesterol is synthesized from: A) acetyl-CoA. B) choline. C) lipoic acid. D) malate. E) oxalate. 5) V max for an enzyme-catalyzed reaction: A) generally increases when pH increases. B) increases in the presence of a competitive inhibitor. C) is limited only by the amount of substrate supplied. D) is twice the rate observed when the concentration of substrate is equal to the K m . E) is unchanged in the presence of a uncompetitive inhibitor. 6) A metabolic pathway proceeds according to the scheme, R S T U V W. A regulatory enzyme, X, catalyzes the first reaction in the pathway. Which of the following is most likely correct for this pathway? a) Either metabolite U or V is likely to be a positive modulator, increasing the activity of X. b) The first product S, is probably the primary negative modulator of X, leading to feedback inhibition. c) The last reaction will be catalyzed by a second regulatory enzyme. d) The last product, W, is likely to be a positive modulator, increasing the activity of X. e) The last product, W, is likely to be a negative modulator of X, leading to feedback inhibition. 2
Background image of page 2
7) The synthesis of purine and pyrimidine nucleotides differ in that: A) ATP is required in the synthesis of purines but not in the synthesis of pyrimidines. B)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 22

Final06%20key - ANSWER KEY CORRECT ANSWERS IN BOLD BIBC102...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online