Polypeptide growth factors
A) act as mitogens.
B) are secreted by a wide variety of cells.
C) are a group of polypeptide hormones.
D) bind to membrane bound receptors to activate an intracellular signal cascade.
E) All of the answers are true.

Question

Quizplus · Accepted Answer

Polypeptide growth factors indeed act as mitogens (stimulating cell division), are secreted by a wide variety of cells, can be classified as a group of polypeptide hormones, and function by binding to membrane-bound receptors to activate intracellular signaling cascades.

Polypeptide Growth Factors