1- Catalyzes the production of FADH, in the Krebs cycle:a) isocitrate dehydrogenaseb)c) fumarasaaconitased) a-ketoglutarate dehydrogenase e) succinatedehydrogenase2- In the Krebs cycle (a single cycle) the following are released:a) one molecule of CO, b) three molecules of NADHc) two FADH2 molecule d) two GTP3- The enzyme that converts citrate to isocitrate is knownWhat:b) isocitrate dehydrogenasea) aconitasecitrate synthetased) citrate lyasee) fumarasec)

The acetyl CoA molecules that are synthesized as the end product of carbohydrate, protein, and lipid…

Answered: 1- Catalyzes the production of FADH, in…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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An "AA" genotype at the ALOX5AP -4900 A>G locus acting in the 5-lipoxygenase pathway may increase risk of breast cancer when intake of which fatty acid is high? a) Stearic acid b) Eicosapentanoic acid c) Linoleic acid d) Alpha-linolenic acid
forskolin is a drug used by scientists to render adenylyl cyclase (AC) constitutively (always) active. What will this do to: a) PKA levels? b) IP3 levels? O a) increase PKA b) no effect on IP3 O a) no effect on PKA b) increase IP3 O a) no effect on PKA b) no effect on IP3 O a) increase PKA b) increase IP3
The citric acid cycle enzyme at which FADH2 is generated is: A) isocitrate dehydrogenase. B) x-ketoglutarate dehydrogenase. C) succinate dehydrogenase. OD) malate dehydrogenase.
Which of the following glycolytic enzymes is NOT subject to regulation a) Hexokinase b) PFK-1 c) Both GAPDH and Triose phosphate isomerase (TPI) d) Triose Phosphate Isomerase (TPI) e) GAPDH
In the liver, what is the major regulation that dictates fate of pyruvate vs lactate? (This can tie into reading assignment!) a) Activation of MCT1 to transport lactate out of cell b) Activation of pyruvate carboxylase and conc dictating use of lactate dehydrogenase, inhibition of PDHC c) Activation of lactate dehydrogen, inactivation of pyruvate carboxylasease and PDHC d) Activation of lactate dehydrogenase and MCT1 (transporter)
9) Considering the enzymatic reaction catalyzed by HIV protease: Options A) hydrolysis is the net reaction observed. B) a peptide bond is cleaved on the carboxyl side of a proline residue. C) a serine residue serves as the nucleophile during the catalytic event. D) inhibitors have been designed to covalently link to the active site just like natural substrates do. E) None of the above is true. F) All of the above are true.
Which of the following statements about the malate-aspartate shuttle is false? a) 2.5 ATPs are formed per cytoplasmic NADH shuttled. b) Transamination is involved. c) Cytoplasmic oxaloacetate is converted to malate. d) Mitochondrial malate is converted to oxaloacetate. e) Antiport transport is not involved.
Di-isopropyl fluorophosphate is a(n) .................. inhibitor of chymotrypsin ? a) allosteric b) irreversible c) uncompetitive d) competitive e) mixed
1) How is the TCA cycle regulated? a) Draw the TCA diagram that fills in all possible regulation points.
Which statement among A-D is false regarding bacterial toxins? A) O Hemolysıns are cell membrane disrupters that can rupture red blood cells. B) O Second mesengar pathway disrupters like cholera toxin produces a debilitating respiratory condition of the lungs. C) O Shiga toxin, tetanus toxin, and hemolysins are all types of exotoxins. D) O Superantigens elicit a hyperactive response by the immune system and can lead to shock. E) O None are false, A-D are all true statements.
PDHC is an enzyme complex consisting of 3 different enzymes. Which of the following processes regulate the activity of PDH Complex? (multiple answers) A) Phosphorylation/Dephosphorylation of E1 B) High levels of cAMP C) Acetylation/Deacetylation of E1 D) High NADH/NAD+ ratio E) High NAD+/NADH ratio
Each of the following citric acid cycle enzymes catalyzes electron transfer to NADH/FADH2 except A) isocitrate dehydrogenase. B) α-ketoglutarate dehydrogenase. C) succinyl CoA synthetase. D) succinate dehydrogenase. E) malate dehydrogenase.

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