Cell organelles DSA

Question 1

What are the 2 cytoplasmic compartments divided by Endoplasmic Reticulum?

Answer 1

Luminal or cisternal compartment

cytoplasmic or cytosolic compartment.

Question 2

How is the SER different from RER (2 things)

Answer 2

Lacks ribosomes

Tubular cisternae

Question 3

Cis Golgi is adjacent to_________?

Answer 3

Endoplasmic Reticulum

Question 4

What are the 2 coated vesicles of the vesicular transport mechanisms?

Answer 4

1. Clathrin-coated vesicles

2. COP-coated vesicles(coat protein).

Question 5

What is the function of Clathrin-coated vesicles?

Answer 5

transporting products from the Golgi apparatus to lysosomes or products from the exterior of the cell to lysosomes.

Question 6

What is the function of COP (coat protein)?

Answer 6

transporting products between stacks of the Golgi apparatus and from the end reticulum to the Golgi apparatus.

Question 7

What is the function of Dynamin?

Answer 7

It surrounds the neck of the invaginated coated pit, causing the neck of the vesicle to pinch off from the PM.

Question 8

What are the main functions of Primary Lysosomes?

Answer 8

Primary lysosomes serve as the storage site of lysosomal hydrolyses.
No digestive events, homogeneous, inactive enzymes.

Question 9

What are the main functions of Secondary Lysosomes?

Answer 9

They are engaged in a catalytic process.

Digestive enzymes, heterogeneous, active enzymes.

Question 10

What are the functions of Peroxisomes?

Answer 10

• Synthesis and degradation of hydrogen peroxide
• Beta-oxidation of long-chain fatty acids
• Bile acid and cholesterol synthesis
• Detoxify alcohol

Question 11

What is the Zellweger Syndrome?

Answer 11

An absence or reduced number or peroxisomes in the cells. Present in the patients at birth, has no cure.