Biology 10th Edition by Eldra Solomon,Charles Martin,Diana Martin,Linda Berg

تمرين 1

During signal transduction
A) the cell converts an extracellular signal into an intracellular signal that leads to a change in some cell process
B) a signaling molecule activates or represses several genes
C) each enzyme catalyzes production of one molecule of product
D) relay of the signal is regulated by paracrine regulation
E) the signal is terminated by prostaglandins