The client asks the health care provider to explain phagocytosis. The provider will respond, "Phagocytosis:

Question

A) Is a cotransport system that helps with the absorption of the medication."
B) Is the movement of particles from an area of higher concentration to one of lower concentration."
C) Uses proteins to form an open channel through which the drug can move into the cell."
D) Is a process where microorganisms are engulfed and subsequently degraded or killed."

Answer 1

Ans: D
Feedback:
Phagocytosis, which means "cell eating," involves the engulfment and subsequent killing or degradation of microorganisms and other particulate matter. Certain cells, such as macrophages and neutrophils, are adept at engulfing and disposing of invading organisms, damaged cells, and unneeded extracellular constituents. An example of cotransport occurs in the intestine, where the absorption of glucose and amino acids is coupled with sodium transport. The process of diffusion describes particle movement from an area of higher concentration to an area of lower concentration, resulting in an equal distribution of permeable substances across the cell membrane. Ion channels are integral proteins that span the width of the membrane and are normally composed of several polypeptides or protein subunits that form a gating system. Specific stimuli cause the protein subunits to undergo conformational changes to form an open channel or gate through which the ions can move.