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Question

Ageing is due to accumulation of harmful proteins. The theory is

A
Free radical
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B
Cross-linking
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C
Error catastrophe
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D
Cross linking
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Solution

The correct option is B Error catastrophe

A. Free radical theory - ging is caused by the accumulation of damage inflicted by reactive oxygen species

B. Cross-linking theory - the ageing of living organisms depends on the casual formation of chemical bonds, or «cross-links», between protein molecules

C. Error catastrophe theory -ageing is the result of the accumulation of errors in cellular molecules that are essential for cellular function and reproduction that eventually reaches a catastrophic level that is incompatible with cellular survival.

D. Cross-linking theory - the ageing of living organisms depends on the casual formation of chemical bonds, or «cross-links», between protein molecules

So, the correct option is ‘Error catastrophe theory’.

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