Lecture 8

Question 1

group of ribosomes bound to an mRNA at a particular time

Answer 1

polysome

Question 2

termination codons that end protein synthesis they are:

Answer 2

UAG,
UAA,
UGA

Question 3

*Protein synthesis (translation of mRNA) steps:

Answer 3

Initiation, Elongation, and termination

Question 4

when regulation of protein synthesis occurs at the level of initiation.

Answer 4

Global regulation

Question 5

when regulation of specific proteins takes place in the level of elongation and termination

Answer 5

Specific regulation

Question 6

co-and post translational processes:

Answer 6

1.Protein folding.
2. Protein Modifications.
3.Cleavage of precursor proteins.
4. Protein Degradation

Question 7

There are a group of proteins help in protein folding

Answer 7

molecular chaperones

Question 8

the process by which a carbohydrate is
covalently attached to a target macromolecule, typically proteins
and lipids

Answer 8

Glycosylation

Question 9

types of proteolytic cleavages are common:

Answer 9

1.Cleavage of the initiator methionine.
2.Cleavage of the signal sequence.
3.Cleavage of large precursor proteins.

Question 10

pathway for protein degradation and they are:

Answer 10

Lysosomal Pathway.
Ubiquitin-proteasome Pathway