Why is C also the answer for Q1? I'm still confused. Could someone tell me where in the passage did the author mention DNA Degradation please?

but also crucial to the functioning of any organism. Indeed, without this mundane structure, every cell division would be a step into senescence, and the onset of old age would begin at birth.

Therefore, telomere are essential for not becoming old just after birth. As it turns out, this is true because the DNA has a degradation.

The telomere slow it down in years and not days

C is also correct

Thank you so much, Carcass. Got it now.

Took 3 mins to solve this.

Which of the following can reasonably be inferred based on the passage?

❑ An individual who aged faster than the average person may have had a shorter telomere buffer than the average person.- Last line states this
❑ Scientists once believed that telomeres served no useful purpose. - out of scope
❑ If DNA degradation were absent, then telomeres would be less important to human health. - That's a tricky one . "T would be less important if DNA division does not happen?" Last line of first para says that without T, cell division would be a step into senescence. So when there is no cell division, then T might not most crucial. In other words, it will be less important. Hence, this answer choice is correct.

Hence, A and C.

The passage suggests that if telomere buffers did not exist - "if there is no T, what would happen?". Ageing would be faster should come as a answer choice.

A) problems associated with aging would begin earlier in life - Yes
B) people would age so rapidly that almost no one would live past childhood - we do not know about childhood. One might live past teenager as well.
C) cellular senescence would probably be prevented by DNA bases - out of scope.
D) chromosomes would lose the ability to store genetic codes - out of scope
E) DNA strands would contain only useful genetic information - out of scope

Hence, A

why cant it be D? he did tell "f, instead of telomeres, our chromosomes stored valuable genetic information at the end of the DNA strand'