Density-Dependent Inhibition Is Explained by Which of the Following

question 74

Multiple Choice

Density-dependent inhibition is explained by which of the following?

• A)As cells become more numerous, they begin to squeeze against each other, restricting their size and ability to produce control factors.
• B)As cells become more numerous, the cell surface proteins of one cell contact the adjoining cells and they 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, more and more of them enter the S phase of the cell cycle.
• E)As cells become more numerous, the level of waste products increases, eventually slowing down metabolism.

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Definitions:

Asystole

A state of no cardiac electrical activity, leading to a lack of contraction of the heart and cessation of blood flow; essentially, cardiac arrest.

Pacemaker

An electronic device that is implanted in the body to regulate the heartbeat by delivering electrical impulses to the heart muscle.

AV Node

The Atrioventricular Node, a part of the cardiac conduction system that delays the transmission of electrical impulses from the atria to the ventricles.

Action Potentials

Quick changes in the electrical charge of a neuron's membrane, allowing the transmission of nerve impulses.