Question

The inhibition of cytochrome c oxidase causes a reduction of ATP in a cell. That cells attempts to divide, but DNA polymerase I becomes inhibited due to the lack of ATP. What will be the result of DNA polymerase I inhibition?

		The resulting mRNA will have several point mutations.
		The resulting amino acid chain will have several point mutations.
		All daughter DNA will have some ribonucleotides instead of deoxyribonucleotides.
		Only lagging strand daughter DNA will have some ribonucleotides instead of deoxyribonucleotides.

What will happen to the flow of electrons through the electron transport chain if cytochrome c oxidase (Cyt c) is inhibited and can no longer perform oxidation?

		Electrons will accumulate downstream of cyt c, not including cyt c
		Electrons will accumulate downstream of cyt c and including cyt c
		Electrons will accumulate upstream of cyt c, not including cyt c
		Electrons will accumulate upstream of cyt c and including cyt c

Answer 1

The inhibition of cytochrome c oxidase causes a reduction of ATP in a cell. That cells attempts to divide, but DNA polymerase I becomes inhibited due to the lack of ATP. The main function of the DNA polymerase I is to bind together the Okasari fragments and also to remove the RNA primer in the daughter DNA strand and because the DNA Polymerase I is unable to do it's function All daughter DNA will have some ribonucleotides instead of deoxyribonucleotides.

Hence the correct option is: All daughter DNA will have some ribonucleotides instead of deoxyribonucleotides.

If cyt c is inhibited then the electrons will get accumulated upstream of cyt c and because cyt c will also get inhibited and doesn't take any electrons it won't be included. Hence the correct option is:

Electrons will accumulate upstream of cyt c, not including cyt c.

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