8. Which of these is not an example for stereo specificity? a) L-lactate dehydrogenase will act only on L-lactic acid, and not D-lactic acid b) D-glucose oxidase acting only on D-glucose and not L-glucose c) L-amino oxidase acts only on L-amino acids and not D-aminoacids d) Hexokinase phosphorylating one or more kind of hexoses

8. Which of these is not an example for stereo specificity? a) L-lactate dehydrogenase will act only on L-lactic acid, and not D-lactic acid b) D-glucose oxidase acting only on D-glucose and not L-glucose c) L-amino oxidase acts only on L-amino acids and not D-aminoacids d) Hexokinase phosphorylating one or more kind of hexoses

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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Select the term in column B which best matches the description in column A. There are more terms then needed. Column A Column B 1. The pentose sugar found in DNA. a) Cis fatty acid b) Trans fatty acid c) Coenzyme d) Cofacipr 2. Commonly referred to as "insoluble fiber". 3. Considered to be an amphipathic molecule. 4. A molecule with the formula C18H3602 is probably a e) Phospholipid 5. Bond created during the formation of the primary structure of a protein. ) Glycogen 6. A non-protein organic molecule needed for proper enzyme functioning. g) Cellulose 7. Pyrimidine base found only in RNA. h) Galactose i) Fructose 8. Increasing the number of these molecules in the cell membrane would increase the permeability of the cell membrane. i) Thymine k) Uracil 9. Bond which connects nucleotide monomers together. 1) Fatty acid m) Disaccharide n) Peptide bond o) A-Helix p) B-Pleated Sheet q) Ribose r) Deoxyribose 10.
Which of the following statements is CORRECT? A) Hexokinase IV is allosterically inhibited by glucose-6-phosphate. B) AMP is an allosteric inhibitor of phosphofructokinase-1. C) ATP functions as a chemical inhibitor of pyruvate kinase within muscle. D) Pyruvate kinase is allosterically activated by fructose-1,6-bisphosphate. E) A and D F) C and D
Please explain why b(lactate) is not a correct answer and give me the correct answer.
The carbon skeleton produced by the lysine deamination can produce: A)Oxaloacetate B)Acetyl-CoA C)Glutamate D)α-ketoglutarate E)Fumarate Answer with explanations is better
The cofactor shown below: is an oxidizing agent is a reducing agent is a carrier of acyl groups is flavin mononucleotide The cofactor shown below: CH2 HC OH HC OH HC OH CH2 H₂C NH H H H OH OH NH₂ 1) is an oxidizing agent 2) is a reducing agent 3) is a carrier of acyl groups 4) is flavin mononucleotide
16. This figure from Foundations should look familiar. Which protein is shown here? A) Aglycosidase B) A G-protein C) Chymotrypsin D) Hexokinase E) Trypsin catalytic triad Ser 195 His 57 H Gly 193 N-H R Ņ Ca CB Asp 102 R' 17. What kind of enzymatic mechanism is shown in this figure from Foundations? A) Specific acid-base catalysis with His57 as the base B) Specific acid-base catalysis with Ser195 as the base C) General acid-base catalysis with Ser195 as the base D) General acid-base catalysis with His57 as the base E) Metal ion catalysis N-H
Phosphofructokinase catalyzes the conversion of ... A) oxaloacetate to citrate OB) glucose to fructose 6-phosphate C) fructose 6-phosphate to fructose 1,6-bisphosphate D) pyruvate to acetyl CoA E) a phosphorylated 6-carbon sugar to two 3-carbon sugars
31.A) What is the overall order of an enzymatic reaction, under conditions where the substrate concentration is much higher with respect to KM? Assume Michaelis-Menten behavior. a) zero b) first c) second d) third e) disordered 31.B) What is the order of an enzymatic reaction with respect to the substrate, under conditions where the substrate concentration is much higher with respect to KM? Assume Michaelis-Menten behavior. a) zero b) first c) second d) third e) disordered
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Part A. If you were to expose cells that are undergoing anaerobic respiration to a radioactive carbon isotope in the form of C6H12O6C6H12O6, which of the following molecules would you not expect to be radiolabeled? a)pyruvate b)succinyl CoA c)fructose-1,6-bisphosphate d)lactate Part b.If you were to expose cells that are undergoing aerobic respiration to a radioactive carbon isotope in the form of acetyl-CoA, which of the following molecules would you not expect to be radiolabeled? a)oxaloacetate b)succinyl CoA c)pyruvate d) CO2
which of the following glycolytic reactions is an oxidation? a) G3P to 1,3-BPG b) PEP to Pyr c) lactic acid fermentation under anaerobic conditions d) condensation of acetate with OAA e) succinate decarboxylase reaction