Question on translation and transcription

[intagurl]

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This is from Kaplan Lesson Book (#2, pg 79)

What's the answer and what are the reasons why other four are wrong?

2. Choose the correct answer.
A. There are threee hydrogen bonds linking adenine to thymine
B. DNA is transcribed to mRNA in the cytosol.
C. DNA is composed of a deoxyribose suar and a hydrogen replacing the
-OH group at the 3` carbon.
D. Translation takes place at the ribosome.
E. Transcription takes place at the ribosome.

My note says D is the answer.
why are the others wrong?

Thank you 😍

 

[Moni Ahmadian]

Intagurl,

The answer is indeed d. Ribosomes carry out the prosess of translation which trasforms mRNA to protein. a is not right because only cytosine and guanine (C and G) form three H-bonds A and T form 2 H-bonds. B is wrong because transcription (formation of mRNA) happens in the nucleus and then mRNA is transported outside of the nucleus. Deoxyribose contains two OH groups on the sugar ribose base only ribonucleic acid (RNA) replaces the OH with H so C is wrong. E is wrong because transcription happens inside the nuc.

Hope it helps!

Moni

This is from Kaplan Lesson Book (#2, pg 79)

What's the answer and what are the reasons why other four are wrong?

2. Choose the correct answer.
A. There are threee hydrogen bonds linking adenine to thymine
B. DNA is transcribed to mRNA in the cytosol.
C. DNA is composed of a deoxyribose suar and a hydrogen replacing the
-OH group at the 3` carbon.
D. Translation takes place at the ribosome.
E. Transcription takes place at the ribosome.

My note says D is the answer.
why are the others wrong?

Thank you 😍

 

[CyborgNinjaX]

Probably stupid commentary on my part but looking at choices D and E, they are the same thing except for the process. Judging from my experience, the two answers that seem to be most similar mean that one of them has to be really wrong and the other one has to be right. Again, this is my experience, its not always right but I raise my eyebrow when I see two choices that are almost the same.

 

[infernobutterfl]

Intagurl,

The answer is indeed d. ...Deoxyribose contains two OH groups on the sugar ribose base only ribonucleic acid (RNA) replaces the OH with H so C is wrong....

Hope it helps!

Moni

I think it is the deoxyribose that replaces the OH with the H at the 2c position. C is wrong because the replacement does not occur at the 3 c, but rather at the 2c position.

 

[Moni Ahmadian]

yeah you are right! it replaces the 2' C. Thanks for correcting😀 I must have been eating something bad

I think it is the deoxyribose that replaces the OH with the H at the 2c position. C is wrong because the replacement does not occur at the 3 c, but rather at the 2c position.

 

[iistoogood4u]

isnt answer B correct for prokaryotes? it doesnt specify whether they'r talkigna bout euk or prok

 

[Moni Ahmadian]

It could be right for prok. You are right. But I think it is about the Euk because it makes more sense to be about the euk cells rather than bacteria

isnt answer B correct for prokaryotes? it doesnt specify whether they'r talkigna bout euk or prok

 

[intagurl]

Thanks Moni!!!!!

and y'all =)

 

[Moni Ahmadian]

you are welcome

Thanks Moni!!!!!

and y'all =)