Second messengers
A) are typically very specific in their activity.
B) are found in the cytoplasm.
C) are usually proteins.
D) do not amplify a signal.
E) are found in every signal transduction pathway.

Question

Quizplus · Accepted Answer

Second messengers are small signaling molecules that are found in the cytoplasm of cells, and function to relay signals from receptors on the cell surface to intracellular targets. They can include molecules such as cyclic nucleotides, calcium ions, and various lipids.

Second Messengers