Which of the following is probably the main factor responsible for the phenomenon of density-dependent inhibition?
A) a local accumulation of growth-inhibiting factors
B) cells' innate ability to "sense" when the organ of which they are a part has no need for additional cells
C) a local deficiency of nutrients
D) physical contact of cell-surface proteins between adjacent cells

Question

Quizplus · Accepted Answer

Density-dependent inhibition is a phenomenon where crowded cells stop dividing after contact with neighboring cells. This is mainly due to physical contact between the cell-surface proteins of adjacent cells, which leads to signaling and inhibition of mitosis. Other factors (such as nutrient deficiency or growth-inhibiting factors) may contribute, but physical contact is the primary mechanism of density-dependent inhibition.

Which of the Following Is Probably the Main Factor Responsible