According to the cross-linkage theory of aging,
A) when normally separate protein fibers cross-link, tissue becomes less elastic.
B) people whose parents had long lives will have longer lives themselves.
C) the bonds between protein fibers in connective tissue lead to increased stamina.
D) the release of free radicals cause age-related DNA and cellular abnormalities.

Question

Quizplus · Accepted Answer

The cross-linkage theory of aging states that when normally separate protein fibers cross-link, tissue becomes less elastic. This is the result of the formation of chemical bonds between proteins, which can lead to stiffening and decreased elasticity of tissues. This theory is supported by observations of increased cross-linking in aging tissues, particularly in the skin and blood vessels.

B, C, and D are not accurate descriptions of the cross-linkage theory of aging.

According to the Cross-Linkage Theory of Aging