Density-dependent inhibition is explained by which of the following processes?
A) As cells become more numerous, they begin to squeeze against each other, restricting their size.
B) As cells become more numerous, the cell surface proteins of one cell contact the adjoining cells, and they signal each other to stop dividing.
C) As cells become more numerous, the protein kinases they produce begin to compete with each other, such that the proteins produced by one cell essentially cancel those produced by its neighbour.
D) As cells become more numerous, the level of waste products increases, which slows metabolism and inhibits growth.

Question

Quizplus · Accepted Answer

Density-dependent inhibition is a phenomenon in which cells stop dividing when they come into contact with each other. This is due to the contact between cell surface proteins of one cell and the adjoining cells, which signal each other to stop dividing. Option A is incorrect because the restriction of cell size due to cell compression is not a recognized mechanism of density-dependent inhibition. Option C is incorrect because protein kinases do not cancel each other out, and option D is incorrect because waste products do not play a role in density-dependent inhibition.

Density-Dependent Inhibition Is Explained by Which of the Following Processes