Which of the following is not used to alter the activity of enzymes through cova

Question

Which of the following is not used to alter the activity of enzymes through covalent modification? a. Phosphorylation. b. Methylation. c. ADP-ribosylation. d. Uridylyllation. e. Cytidylylation. Which of the following apply to reactions displaying sigmoidal kinetics? a. The enzymes catalyzing these reactions are composed of multiple subunits. b. The V_max and K_0.5 of the enzymes catalyzing these reactions can be increased or decreased through interactions with allosteric effectors or by covalent modification. c. Small changes in substrate concentration can result in large changes in the velocity of the reaction. d. a and b. e. a, b, and c. Metabolons are useful to: a. Reduce the need for other means of metabolic regulation. b. Channel metabolism at branch points. c. Sped up metabolism by reducing the diffusion distance between enzymes. d. Reduce the likelihood of destruction of unstable intermediates. e. a, b, and c. f. b, c, and d.

Explanation / Answer

4) Enzyme activity can be altered by linking some group covalently to the enzyme (which is basically a protein). Out of the given methods the most important are, phosphorylation, methylation, ADP-ribosylation, uridylylation. However, cyctidylylation is not used for this process.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.