In the nucleation phase the  G-actin molecules binds to form a trimer, which makes__

a) the entire group relatively weakly to each other

b) the entire group more stable

c) the group acts as a nucleus for polymerization

d) the clump act as a secondary structure

Which of the following statements is correct?

TLS Online TPP Program

#Question id: 1102

#Unit 4. Cell Communication and Cell Signaling

Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have increased levels of which of the following molecules?

TLS Online TPP Program

#Question id: 1103

#Unit 4. Cell Communication and Cell Signaling

An inhibitor of which of the following enzymes could be used to block the release of calcium from the endoplasmic reticulum?

TLS Online TPP Program

#Question id: 1104

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements is true of signal molecules?

TLS Online TPP Program

#Question id: 1105

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a correct association?

TLS Online TPP Program

#Question id: 1106

#Unit 4. Cell Communication and Cell Signaling

Protein kinase is an enzyme that functions in which of the following ways?

TLS Online TPP Program

#Question id: 1107

#Unit 4. Cell Communication and Cell Signaling

Viagra causes dilation of blood vessels and increased blood flow to the penis, facilitating erection. Viagra acts by inhibiting which of the following events?