Compartmentalisation

Question 1

Functions of endomembrane

Answer 1

SER:
•synthesises lipids, phospholipids, steroids, enzymes
• metabolism of carbs (enzymes)
• detoxification of poisons (by adding OH to drugs, which are metabolised by SER
• removal of PO4 from glucose phosphate to make glucose, which can move into cell
• restores calcium ions

RER:
• makes secretory proteins (produced by its ribosomes)
• membrane factory (adds more proteins and phospholipids)

Question 2

Compartmentalisation

Answer 2

• creates favourable conditions for chemical reaction to take place
• Separate chemically heterogenous environments
• Allows eukaryotes to perform chemically incompatible reactions at the same time
• Increases surface area of cells

Question 3

Endomembrane system

Answer 3

• Different membranes that carry out different functions

* Membranes connected through physical continuity or movement of membrane segments