Author Question: Which of the following statements is evidence that supports the programmed theory of aging? A) ... (Read 99 times)

rlane42 · **on:** Jul 11, 2018

Which of the following statements is evidence that supports the programmed theory of aging?

A) The life spans attained by parents and their offspring are negatively correlated.
B) Mutations perpetuate themselves through each cycle of cell division.
C) In cultures, cells go through a finite number of cell divisions before dying.
D) In cultures, cells from older donors divide faster than those from younger donors.

Question 2

A female patient is seen by the school nurse because of flat lesions that are clear in the center with erythematous borders. In assessing a patient for tinea corporis, the nurse would check

a. soles of the feet.
b. back of the scalp.
c. groin area.
d. anterior abdomen.

Leostella20 · **Reply #1 on:** Jul 11, 2018

Answer to Question 1

C
Feedback:
Studies of in vitro cell proliferation have demonstrated that various species have a finite number of cell divisions. Life spans of parents and offspring are positively correlated. Mutation perpetration is a tenet of the error theory, not the programmed theory, of aging. Although longer life spans correlate positively with numbers of cell divisions in vitro, the rate of cell division is not affected.

Answer to Question 2

D
Tinea corporis is known as ringworm of the body. It occurs on parts of the body with little or no hair.