Multiple Choice
Which of the following statements best describes the mechanism by which the ced-9 protein in the nematode C. elegans prevents apoptosis in normal cells?
A) Active ced-9 prevents activation of the caspase activity of ced-3.
B) Ced-9 remains inactive until it is stimulated by ced-3 and other caspases.
C) Ced-9 is cleaved to produce the active ced-3 caspase.
D) Ced-9 inhibits the cell membrane receptor for the death-signaling molecule.
Correct Answer:
Verified
Correct Answer:
Verified
Q27: Which of the following responses is stimulated
Q28: What role do phosphatases play in signal
Q29: Some cases of human melanoma have been
Q30: Which of the following statements best describes
Q31: Viagra causes dilation of blood vessels and
Q33: Which of the following conditions is required
Q34: Not all intercellular signals require transduction. Which
Q35: Many G protein-coupled receptors contain seven transmembrane
Q36: Consider this pathway: epinephrine → G protein-coupled
Q37: Lipid-soluble signaling molecules, such as aldosterone, cross