CHEM 1516 Practice Exam 1 (#2)

CHEM 1516 Practice Exam 1 (#2) - COPYRIGHT 2008 Dr. Bert...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Biochemistry II CH1516 Exam 1 Posted to Blackboard 08.08 Page 1 1. The harmful effects of excess consumption of ethanol are in large part due to : A) the large amount of NAD+ produced by the detoxification of ethanol. B) the large amount of NAD+ needed to detoxify ethanol. C) the large amount of NADH needed to detoxify ethanol. D) the large amount of ATP needed to detoxify ethanol. 2. How many different reactions (steps) in glycolysis are clearly (by inspection) endergonic ? A) 2 B) 4 C) not enough information to answer the question D) 1 3. When ethanol is detoxified or oxidized as fuel, it is converted first into: A) lactate B) acetylCoA C) pyruvate D) glucose 4. Why do we produce lactic acid when muscles are in oxygen debt ? A) we cannot produce ATP from glycolysis unless we make lactic acid instead of pyruvate B) to regenerate NAD+ in order to keep glycolysis going C) to regenerate NADH in order to keep glycolysis going D) pyruvate is toxic so it must be converted to lactic acid which is not toxic 5. What class of enzymes is used to detoxify ethanol in our body ? A) isomerase B) phosphorylase C) dehydrogenase D) kinase 6. What do you know about Thioesters ? A) they contain sulfur B) they do not contain phosphorus C) all of the answer choices are correct D) they are high energy compounds COPYRIGHT 2008 Dr. Bert Silverman Posted to Blackboard
Background image of page 1

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

View Full DocumentRight Arrow Icon
Biochemistry II CH1516 Exam 1 Posted to Blackboard 08.08 Page 2 7. Which enzyme traps glucose in the cytoplasm of a cell ? A) pyruvate kinase B) PFK C) enolase D) hexokinase 8. How many different reactions (steps) in glycolysis produce substrate-level phosphorylation ? A) 3 B) 4 C) 2 D) 1 9. When ATP is used as the common intermediate in the transfer of energy, ATP : A) produces substrate-level phosphorylation B) does not bond to the substrate of a reaction C) bonds to the product of a reaction D) bonds directly to the substrate of a reaction 10. Which metabolic intermediate is a ketone? A) F6P B) PEP C) what's a ketone? D) G6P
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

CHEM 1516 Practice Exam 1 (#2) - COPYRIGHT 2008 Dr. Bert...

This preview shows document pages 1 - 3. Sign up to view the full document.

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