Final Answer:
True. Many survival factors regulate apoptosis by influencing the expression or activities of Bcl2 family members.
Step-by-step explanation:
Survival factors play a crucial role in modulating apoptosis, a programmed cell death process. One significant mechanism involves the Bcl2 family, which includes both pro-apoptotic and anti-apoptotic proteins. These proteins regulate the integrity of the mitochondrial membrane, a key step in apoptosis. Anti-apoptotic proteins, like Bcl2, inhibit cell death, while pro-apoptotic proteins promote it. Survival factors can influence the balance between these proteins, tipping the scale toward either cell survival or apoptosis. By regulating the expression or activities of Bcl2 family members, survival factors exert control over the intricate molecular pathways that determine whether a cell undergoes apoptosis.