Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Name two conditions in which the enzymes involved in the TCA cycle might be inhibited.
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- What is the name of the reactant, of the TCA cycle reaction, which yields a GTP? Selected Answer: succinate Correct Answer: Evaluation Method Exact Match Question 11 Bnous: Evaluation Method Exact Match Exact Match Exact Match onday, August 10, 2020 2:58:12 AM CDT Which enzyme of the TCA cycle catalyzes the reaction similar to the one that converts pyruvate to acetyl CoA? Selected Answer: dehydrogenase complex Correct Answer: Selected Answer: 2.5 Correct Answer: Evaluation Method Exact Match ✔ Exact Match Selected Answer: False Answers: Question 10 Question 2 How many moles of NADH will be produced when 1 mole of fructose-1,3-bisphosphate is metabolized to pyuvate and then through TCA cycle ✔True False Selected Answer: succinate Correct Answer: Question 9 The TCA cycle enzyme fumarase catalyzes a reversiable reaction. This enzyme shows a very high degree of selectivity in choosing the substrate for both the forward and the reverse reactions. Evaluation Method Exact Match Specified…arrow_forwardCorticosteroids (a type of hormone), and Nonsteroidal Anti-inflammatory Drugs (NSAIDs) are non-narcotic pain relievers. Both medications are prescribed to reduce inflammation in the body. NSAIDs such as aspirin, acetaminophen, and ibuprofen are able to reduce pain, fever, and inflammation by blocking the action of the cyclooxygenase enzyme (COX) that catalyzes the conversion of arachidonic acid into prostaglandins. Common corticosteroids include prednisone, cortisone, and methylprednisolone. Choose one of these three corticosteroids. Do some internet research on the corticosteroid that you choose and then explain how the drug works to reduce inflammation.arrow_forwardCan you answer all the parts to this question please A. Where does a low barrier hydrogen bond (LBH) form transiently during the serine protease mechanism? B. What part does this LBH play in the serine protease mechanism?arrow_forward
- What is the likely function of the cytosolic cAMP in this transduction pathway? Question 16 options: a) It is a competitive inhibitor of the protein kinase. b) It is a hormone. c) It is a messenger RNA. d) It is a coenzyme. e) It is a second messenger.arrow_forwardYarrowia lipolytica(Yl) is a non-conventional yeast that diverged from baker’s yeast, Saccharomyces cerevisiae(Sc), early in evolutionary history. The regulation of glycolytic enzymes in Yl differs from that of Sc. The figures below show how PFK activity is affected by fructose-2,6-bisphosphate and phosphoenolpyruvate. Based on these data, which molecule is the major regulator of PFK activity in each species?arrow_forwardDescribe two types of regulation of the enzyme glutamine synthetase and explain why the regulation of this enzyme is soooo complex.arrow_forward
- Complete the paragraph describing the fate of glutamate, labeled at the Cγ position with 14C, once it has been introduced to the TCA cycle. In the second round (A.) 50%,B.) 25%, C.)or NONE of the label is lost) , however, in each subsequent cycle (25%,50%, or NONE of the label is lost). This occurs becuase at the end of the second round the label is (A.)Equally dsitributed among all carbons B.) part of the carboxylate group C.) Positioned on the erminal Carbon) of oxaloacetate and each cycle (A.) releases a carbon B.) Releases two carbons C.) adds a carbon) from oxaloacetate.arrow_forwardSo, what are the examples of regulators for each of the levels (A, B, and C)?arrow_forward
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