ER

Question 1

General structures

Answer 1

1. Cistern; cisternae
2. Continuous with outer membrane of nuclear envelope

3 granular or non-granular

Question 2

Structure of RER

Answer 2

1. Granular attach-> ribosomes attached
2. Presence of channel proteins
   - > binding site for ribosomes to dock and synthesis polypeptide directly

Question 3

Function of RER

Answer 3

1. Sites of protein (glyco.) synthesised and transported to other parts of cells as transport vesicles

2 chaperon protein
-> correct folding of newly synthesised polypeptides

Question 4

Structure of SER

Answer 4

• no ribosomes attached

- no channel protein

Question 5

Function of SER

Answer 5

1. Lipids synthesis
2. Metabolites carbo
3. Detoxification
4. Regulate calcium ion concentration
5. ER stress
6. Chem modification