Which Statement Does NOT Support the Theory That Aging May

question 57

Multiple Choice

Which statement does NOT support the theory that aging may occur in response to cellular damage by free radicals?

• A)Mice genetically engineered to express higher levels of catalase lived 20% longer than control mice.
• B)Mice lacking mitochondrial superoxide dismutase died after a few weeks of life.
• C)Bacteria and yeast cells incapable of expressing superoxide dismutase cannot live in an oxygen-containing environment.
• D)Rats and mice fed high levels of antioxidants age at the same rate as those on a standard diet.

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