3 types of RNA question.

[joonkimdds]

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Hi, I am studying biology right now and I hope you guys could help me out here. I am studying 3 types of RNA including transcrption and translation. If you guys have a kaplan blue book, it's on page 59. I read it over and over but I am still not certain whether I mastered this whole concept or not.

1.RNA copies codons from DNA and it's called transcription. This special RNA is called mRNA and RNA polymerase is what this process is called.

Q1. is what I wrote on #1 correct? without any error?

2. tRNA molecule arrives at a ribosome. It has dual function. one side is amino acid and the another side is anticodon. Anticodon is the codon that tRNA copies from mRNA, just like mRNA copied from DNA.

Q2. is what I wrote on #2 correct?


Q3. it says tRNA arrives at a ribosome to copy codons from mRNA, so does that mean mRNA is inside ribosome?

Q6. one of my previous quiz asked me which RNA doesn't exist and it gave me 5 choices. I already knew that m,t,rRNA exist, but there were another one and 1 fake RNA. which RNA is the another RNA that exist or I learn in general bio class?

Q7. there is something called 3' and 5'. I read this so many times but I still don't understand what those two numbers indicate.

You don't have to answer all of my questions. but if u know the answer it would be great, and when u answer my question, plz write a number before u answer my questions. thanks so much for reading this post.

 

[dentister]

1.RNA copies codons from DNA and it's called transcription. This special RNA is called mRNA and RNA polymerase is what this process is called.

Q1. is what I wrote on #1 correct? without any error?

RNA synthesis is based on a DNA template. The process by which this RNA forms is call transcription.

Eukaryotes have 3 RNA polymerase I, II, III. RNA polymerase II is used for mRNA synthesis.

All transcription are done in Nucleus.

2. tRNA molecule arrives at a ribosome. It has dual function. one side is amino acid and the another side is anticodon. Anticodon is the codon that tRNA copies from mRNA, just like mRNA copied from DNA.

Q2. is what I wrote on #2 correct?

tRNA have 3 functions:
• It carries(is “charged with”) an amino acid.
• It associate with mRNA.
• It interact with ribosome.

Q3. it says tRNA arrives at a ribosome to copy codons from mRNA, so does that mean mRNA is inside ribosome?

The mRNA, as a linear sequence of codons, specifies the polypeptide sequence to be made. The structure of ribosome enables it to hold the mRNA and charged tRNA in the right position (4 binding sites, E, P, A, T), allowing polypeptide being translated.

Q6. one of my previous quiz asked me which RNA doesn't exist and it gave me 5 choices. I already knew that m,t,rRNA exist, but there were another one and 1 fake RNA. which RNA is the another RNA that exist or I learn in general bio class?

There are 5 kinds of RNA are transcribed:
• mRNA=messenger RNA
• tRNA= transfer RNA
• rRNA= ribosomal RNA
• snRNA= small nuclear RNA
• RNAi = small interfering RNA

Q7. there is something called 3' and 5'. I read this so many times but I still don't understand what those two numbers indicate.
5’ cap = modified form of guanine.
3’ tail = poly A tail



I think you should go back to you biology text book or class notes, what I put down just very general information. But hope this can help. 🙂

 

[tinman831]

You definitely need to go back to your biology text book for this information. The Kaplan book gives you only very basic information and they assume you have had some background in it. You should NOT be studying for your bio class out of the Kaplan book.

 

[joonkimdds]

1.RNA copies codons from DNA and it's called transcription. This special RNA is called mRNA and RNA polymerase is what this process is called.

Q1. is what I wrote on #1 correct? without any error?

RNA synthesis is based on a DNA template. The process by which this RNA forms is call transcription.

Eukaryotes have 3 RNA polymerase I, II, III. RNA polymerase II is used for mRNA synthesis.

All transcription are done in Nucleus.

2. tRNA molecule arrives at a ribosome. It has dual function. one side is amino acid and the another side is anticodon. Anticodon is the codon that tRNA copies from mRNA, just like mRNA copied from DNA.

Q2. is what I wrote on #2 correct?

tRNA have 3 functions:
• It carries(is “charged with”) an amino acid.
• It associate with mRNA.
• It interact with ribosome.

Q3. it says tRNA arrives at a ribosome to copy codons from mRNA, so does that mean mRNA is inside ribosome?

The mRNA, as a linear sequence of codons, specifies the polypeptide sequence to be made. The structure of ribosome enables it to hold the mRNA and charged tRNA in the right position (4 binding sites, E, P, A, T), allowing polypeptide being translated.

Q6. one of my previous quiz asked me which RNA doesn't exist and it gave me 5 choices. I already knew that m,t,rRNA exist, but there were another one and 1 fake RNA. which RNA is the another RNA that exist or I learn in general bio class?

There are 5 kinds of RNA are transcribed:
• mRNA=messenger RNA
• tRNA= transfer RNA
• rRNA= ribosomal RNA
• snRNA= small nuclear RNA
• RNAi = small interfering RNA

Q7. there is something called 3' and 5'. I read this so many times but I still don't understand what those two numbers indicate.
5’ cap = modified form of guanine.
3’ tail = poly A tail



I think you should go back to you biology text book or class notes, what I put down just very general information. But hope this can help. 🙂

Thanks, that helps, but I still understand Q7 answer. U said modified form of guanine? guanine is one of the nucleotide base of DNA and RNA. So, if it says starts from 5' does that mean it starts from G?

 

[BallDontLie]

You definitely need to go back to your biology text book for this information. The Kaplan book gives you only very basic information and they assume you have had some background in it. You should NOT be studying for your bio class out of the Kaplan book.

I agree, this is pretty basic stuff and it sounds like you're getting some of your terminology mixed up. Stop getting help here..you're better off going to your professor's office hours and discussing concepts that still confuse you.

 

[ECUMuscle]

Go to www.johnkyrk.com/index.html ...it gives pretty good detailed information in an animation setup. good luck

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