Question

When animal cells are grown in a petri dish, they typically stop dividing once they have formed a single, unbroken layer on the bottom of the dish. This arrest of division is an example of:___________.A) cancer.B) cell constraint.C) density-dependent inhibition.D) cell division repression.E) growth factor desensitization.

Answer 1

Answer: C) density-dependent inhibition

Explanation: When density is high. cell division is inhibited. Density-dependent inhibition occurs when cells grow to a limit and the density of the area is high, growth becomes inhibited as a result of competition for nutrients, space and growth factors. When such arises, the cells get a notification to stop division.