Question 11 (1 point) In what cellular compartment is the process of posttransla

Question

Question 11 (1 point)

In what cellular compartment is the process of posttranslational modification typically started for most proteins?

Question 11 options:

The mitochondria

The nucleus

The lysosome

The endoplasmic reticulum

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Question 12 (1 point)

Which of the following proteins is NOT involved in transporting protein to the cell's nucleus?

Question 12 options:

Importin beta

Ran

Importin alpha

SecA

NFT2

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Question 13 (1 point)

Which of the following drugs inhibits posttranslational glycosylation?

Question 13 options:

streptomycin.

puromycin.

tunicamycin.

cycloheximide.

chloramphenicol.

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The mitochondria

The nucleus

The lysosome

The endoplasmic reticulum

Explanation / Answer

Question 11

In what cellular compartment is the process of posttranslational modification typically started for most proteins?

ans=The endoplasmic reticulum

(The Golgi apparatus is a cellular organelle responsible for the modification and trafficking of proteins to other organelles such as the lysosome, the digestive organelle of the cell. Proteins translated within the rough endoplasmic reticulum are transferred to the Golgi.)

Question 12

Which of the following proteins is NOT involved in transporting protein to the cell's nucleus?

ans=secA

(The SecA protein is a cell membrane associated subunit of the eubacterial Sec or Type II secretory pathway, a system which is responsible for the secretion of proteins through the cell membrane. Within this system SecA has the functional properties of an ATPase and is required to empower the movement of the protein substrate across the translocon channel.)

Question 13

Which of the following drugs inhibits posttranslational glycosylation?

ans=tunicamycin.

(The following six antibiotics used in inhibitors of protein synthesis. The antibiotics are: 1. Chloramphenicol 2. Puromycin 3. Streptomycin 4. Actinomycin 5. Tetracyclins and 6. Cycloheximide.)

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