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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Biology => Topic started by: Smiley_ on March 03, 2013, 05:20:24 pm

Title: question about rna
Post by: Smiley_ on March 03, 2013, 05:20:24 pm
our teacher has asked us to each come up with a question about rna and I cant think of anything ,  also if someone has a goodquestion about ezymes that would be  good too because i was going to ask something that I already new! 
thanks
Title: Re: question about rna
Post by: alondouek on March 03, 2013, 05:22:15 pm
Someone just asked me a very good question:

Is it only mRNA that has coding information, or are there coding sequences in tRNA and rRNA too?
Title: Re: question about rna
Post by: Yacoubb on March 03, 2013, 05:24:19 pm
Is there any possible way to distinguish a DNA molecule and an RNA molecule merely by looking at the chemical formula of a molecule?

Enzymes:
When someone is exposed to excessive heat, and their thermoregulating, homeostatic mechanisms fail, can enzymes denature due to the heat being above optimum temperature? What consequences would this have?
Title: Re: question about rna
Post by: Smiley_ on March 03, 2013, 05:26:04 pm
Quote from: alondouek on March 03, 2013, 05:22:15 pm
Someone just asked me a very good question:

Is it only mRNA that has coding information, or are there coding sequences in tRNA and mRNA too?

thanks


they do dont they ?
Title: Re: question about rna
Post by: Smiley_ on March 03, 2013, 05:27:04 pm
Quote from: Yacoubb on March 03, 2013, 05:24:19 pm
Is there any possible way to distinguish a DNA molecule and an RNA molecule merely by looking at the chemical formula of a molecule?

Enzymes:
When someone is exposed to excessive heat, and their thermoregulating, homeostatic mechanisms fail, can enzymes denature due to the heat being above optimum temperature? What consequences would this have?


thanks but we just read a case study on this !
Title: Re: question about rna
Post by: alondouek on March 03, 2013, 05:30:25 pm
Quote from: fishandchips on March 03, 2013, 05:26:04 pm
thanks


they do dont they ?

The answer I gave this person was:

"only mRNA contains specific coding for a specific amino acid. However, by understanding the process of translation, we know that tRNA molecules are what 'carry' the amino acids to the ribosome. While mRNA has codons, tRNA has complementary anticodons; I suppose you could say that these indirectly code for a specific amino acid, but I wouldn't risk it."

Oh and for enzymes, why not ask your teacher if enzymes have multiple active sites. I'm actually not sure sure about this one, but I lean towards 'No.'
Title: Re: question about rna
Post by: Smiley_ on March 03, 2013, 05:32:34 pm
Quote from: alondouek on March 03, 2013, 05:22:15 pm
Someone just asked me a very good question:

Is it only mRNA that has coding information, or are there coding sequences in tRNA and mRNA too?
also do you mean rrna?
Title: Re: question about rna
Post by: alondouek on March 03, 2013, 05:36:03 pm
Quote from: fishandchips on March 03, 2013, 05:32:34 pm
also do you mean rrna?

Yep haha, amended in initial post.
Title: Re: question about rna
Post by: Smiley_ on March 03, 2013, 06:12:14 pm
Quote from: alondouek on March 03, 2013, 05:36:03 pm
Yep haha, amended in initial post.

thanks for your help! :)
Title: Re: question about rna
Post by: Bad Student on March 03, 2013, 06:20:16 pm
Ask your teacher why RNA uses uracil instead of thymine.