Question

which statement will the nurse identify as the biological clock theory of aging? free radicals cause oxidative stress, damaging cells, dna, and mitochondria. cell membranes break down and are phagocytized at the end of their lifespan. cells of the body wear out and break down. the immune system increases susceptibility to disease and autoimmune responses.

Explanation:

The biological - clock theory of aging posits that there are internal biological mechanisms that control the aging process like a clock. Cell membranes breaking down and being phagocytized at the end of their lifespan is related to an internal, time - regulated process. Free radicals causing oxidative stress is related to the free - radical theory of aging. Cells wearing out is related to the wear - and - tear theory. The immune system changes are related to the immunological theory of aging.

Answer:

Cell membranes break down and are phagocytized at the end of their lifespan.