Multiple Choice
The cells of multicellular organisms use a variety of molecules as signals which are
11. How Genes Are Controlled
Cell Signaling
Multiple Choice
Signal transduction pathways:
A
Are necessary for signals to cross the membrane.
B
Include the intracellular events caused by a signal binding to a receptor.
C
Include the extracellular events caused by a signal binding to a receptor.
D
Carry a signaling molecule to the nucleus of a cell.