M2.6. Translation.

Question 1

a process in which mRNA codons are deciphered to synthesize a protein molecule

Answer 1

Translation

Question 2

• an rRNA–protein complex
• serves as the site of protein synthesis

Answer 2

Ribosome

Question 3

Ribosomes contain:

Answer 3

• 4 rRNA molecules
• 80 proteins packed into two rRNA-protein subunits (one small and one large)

Question 4

Ribosomes are?
1. ____ % rRNA
2. ____ % protein by mass

Answer 4

1. 65%
2. 35%

Question 5

A ribosome’s active site -

I don’t get this part :<

Answer 5

Large subunit

Question 6

a RNA catalyst

Answer 6

Ribosome

Question 7

binds to the small subunit of the ribosome.

Answer 7

mRNA

Question 8

Five Steps of Translation Process?

AIE TP

Answer 8

1. Activation of tRNA
2. Initiation of protein synthesis
3. Elongation
4. Termination
5. Post-translational processing

Question 9

addition of specific amino acids to the 3’-OH group of tRNA.

Answer 9

Activation of tRNA

Question 10

Begins with binding of mRNA to small ribosomal subunit such that its first codon (initiating codon AUG) occupies a site called the P site (peptidyl site)

Answer 10

Initiation of protein synthesis

Question 11

Adjacent to the P site in an mRNA–ribosome complex is A site (aminoacyl site) and the next tRNA with the appropriate anticodon binds to it.

Answer 11

Elongation

Question 12

The polypeptide continues to grow via translocation until all necessary amino acids are in place and bonded to each other.

Answer 12

Termination

Question 13

gives the protein the final form it needs to be fully functional

Answer 13

Post-translational processing

Question 14

the first codon [initiating codon AUG] occupies a site called?

what amino acid is present in AUG?

Answer 14

P site/ Peptidyl site

methionine

Question 15

P site is adjacent to?

Answer 15

A site/ Aminoacyl site