Multiple Choice
Which is NOT a current hypothesis about the cause of aging?
A) Blood concentrations of hormones change.
B) Cells can divide about 50 times,and then they die.
C) The immune system becomes less able to recognize and destroy foreign substances.
D) Connective tissue stiffens and reduces flexibility.
E) All of these are current hypotheses about the cause of aging.
Correct Answer:
Verified
Correct Answer:
Verified
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