Enzyme X exhibits maximum activity at pH-6.3. X shows a fairly sharp decrease in its activity when the pH goes much lower than 5.8. One likely interpretation of this pH activity is that: a Glu residue on the enzyme is involved in the reaction. the enzyme uses NADH has a cofactor O the enzyme uses coenzyme A has a cofactor O a Tyr residue on the enzyme is involved in the reaction. Oa His residue on the enzyme is involved in the reaction

Amino acids are linked through peptide bonds to form proteins. This linkage of amino acids in the formation of proteins accomplished by [ Select ] reaction V [ Select ] Hydrolysis Fission Condensation Fusion

15) The graph at right shows the results of reaction rate vs. substrate concentration for a Michaelis-Menten type enzyme 16) Th a. True b. False* reaction rate substrate concentration

With a ∆G°´ of -16.7 kJ/mol, the reaction catalyzed by hexokinase is considered to be _____. at equilibrium substrate and product concentration dependent freely reversible metabolically irreversible none of the above

Bypass reaction in the anabolic pathway often occurs when   A The ΔG of the reverse reaction in the catabolic pathway has a large negative value   B The ΔG of the reverse reaction in the catabolic pathway has a large positive value   C The ΔG of the reaction in the anabolic pathway is close to zero   D The ΔG of the reaction in the anabolic pathway is positive   E None of the above

please help me identify these huhu thank you

What kind of catalysis is cysteine driving in this picture? S Los i fy R……—NHR N-H---S O. N-H H-N H-N. O Metal catalysis Covalent catalysis Base catalysis O Acid catalysis NHR²

38. The shown reaction is one of the four repeating steps during fatty acid biosynthesis. Which of the following statements is correct? 유 CH3-C-CH₂-C-S-ACP A B OH 유 CH3-C-CH₂-C-5-ACP → A. The small molecule in box A is NADPH + H* B. It is the second reduction reaction during fatty acid biosynthesis C. Both A and B D. Neither A nor B

1. The concentration of substrate X is high. What happens to the rate of the enzyme-catalyzed reaction if the concentration of substrate X is reduced? Explain. 2. An enzyme has an optimum pH of 7.2. What is most likely to happen to the activity of the enzyme if the pH drops to 6.2? Explain