Question

If slight differences in the structure of a particular RNA molecule made it more successful in getting nucleotides from its environment than other RNA molecules, what outcome is most likely?
a. This particular RNA molecule would attract nucleotides of other RNA molecules
b. This particular RNA molecule would become longer than other RNA molecules.
c. This particular RNA molecule would not have an advantage because it would run out of nucleotides nearby.
d. This particular RNA molecule would produce more copies of itself than would other RNA molecules.

Answer 1

Really confusing

Answer 2

i know that is why im asking

Answer 3

really? why?

Answer 4

I still say this is a really bad question! But I don't think it is A) because as RNA molecules elongate, they take free nucleotides attached to tRNA - not nucleotides already in a RNA polymer. I also don't think its D) because unless we're talking about a couple viruses, RNA does not replicate. RNA is made from DNA, so and RNA cannot 'copy' itself.

Answer 5

haha back to the beginning its either B or c, another roadblock!

Answer 6

Thats leaves B and C. And usually the cell has ample free nucleotides, so I think C is very unlikely. The cell is transcribing RNA all the time, so I'd say C is out.

That leaves B.

PS - ignore the dumb tRNA comment earlier. Brain fart. Although elongating RNA chains still do use free nucleotides, not ones from other RNA chains.

Answer 7

haha, thanks! :)