試題詳解

22. Telomere shortening puts a limit on the number of times a cell can divide. Research has shown that telomerase can extend the life span of cultured human cells. How might adding telomerase affect cellular aging?
(A) Telomerase will speed up the rate of cell proliferation
(B) Telomerase shortens telomeres, which delays cellular aging
(C)Telomerase eliminates telomere shortening and delays aging
(D) Telomerase would have no effect on cellular aging