Biology

Correct answer: A.To promote cell cycle progression

Explanation:

Growth factors are signaling molecules that bind to receptors on the cell surface, triggering intracellular pathways that promote cell cycle progression. These pathways regulate the phases of the cell cycle (G1, S, G2, and M), facilitating cell growth, division, and proliferation. Growth factors are essential for tissue growth, repair, and maintaining homeostasis.

Why the other options are incorrect:

B.To inhibit cellular respiration: Growth factors do not inhibit cellular respiration; they s...