What determines the sequence of amino acids in a protein?

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truthbetold
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What determines the sequence of amino acids in a protein?

Post by truthbetold » Sat Aug 30, 2008 8:21 pm

a. primary structure
b. sequence of nucleotides in RNA, which was determined by the sequence of nucleotides in the gene for the protein.
c. sequence of nucleotides in DNA, which was determined by the sequence of nucleotides in RNA
d. the sequence of RNA nucleotides making up the ribosme
e. the 3-d shape of the protein

After looking in my textbook, I found "the precise primary structure is determined not by random linking of amio acids, but by inherited genetic information."

On Wiki, I found nothing of use.

So I think 'a' and 'e' are out.

All the biology jargon is throwing me off as to whether the answer is B, C, or D.
My guess is 'c.'

Thanks!

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alextemplet
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Post by alextemplet » Sat Aug 30, 2008 9:28 pm

Think about where "inherited genetic information" is stored in the cell.
Generally speaking, the more people talk about "being saved," the further away they actually are from true salvation.

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truthbetold
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Re: What determines the sequence of amino acids in a protein?

Post by truthbetold » Sat Aug 30, 2008 9:53 pm

Oh, of course!
DNA!DNA stores genetic material and RNA takes it to wherever the protein is built. Then the sequence of the nucleotides matters.

It is 'c.'

Thanks.

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alextemplet
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Post by alextemplet » Sun Aug 31, 2008 12:04 am

Not quite. Which determines the other? Does DNA determine RNA or does RNA determine DNA?
Generally speaking, the more people talk about "being saved," the further away they actually are from true salvation.

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suhrudh
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Re: What determines the sequence of amino acids in a protein?

Post by suhrudh » Tue Oct 19, 2010 9:16 pm

i am pretty sure that the sequence is determined by the DNA
so in other words it is the DNA choice

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jonmoulton
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Re: What determines the sequence of amino acids in a protein?

Post by jonmoulton » Tue Oct 19, 2010 11:26 pm

You can determine the order of these steps by looking at these terms in Wikipedia:
transcription
translation

Julie5
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Post by Julie5 » Wed Oct 20, 2010 5:02 pm

Warning, your options are tricks! That is why (c) is wrong (it's a trick answer!).

Hint - the correct answer is true, but slightly incomplete

Once you've looked up transcription and translation, you'll see why.

A lot of multiple choice questions require realy, really careful reading, or they will catch you out!

Here's a good word for you - co-linear. It means the sequence of amino acids in a polypeptide (subnit of protein) is colinear (ie, the same order) as that of (a) xxx and therefore (b)xxxx (you'll know the words once you've looked up transcription and translation.)

Good luck!

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Post by JackBean » Thu Oct 21, 2010 6:02 am

well, I don't think it's really so tricky, you just need to really read the answers...
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

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