D8 endoplasmic reticulum structure

Question 1

What is the endoplasmic reticulum?

Answer 1

An elaborate system of double membranes, forming flattened sacks, with interconnecting fluid filled spaces (Cisternae)

Question 2

What is the endoplasmic reticulum connected to?

Answer 2

The ER is connected to the outer nuclear membrane (Nuclear Envelope) and the cell surface membrane, the cysternae form a network of passages which allow materials to pass through the cell

Question 3

What are the two types of Endoplasmic Reticulum?

Answer 3

• Rouch ER - With ribosomes

* Rough ER - Without ribosomes

Question 4

Describe Rough Endoplasmic Reticulum

Answer 4

• RER has ribosomes on the outer surface and transports the protiens made there.
• It is found in large quantities in salivary glands

Question 5

Describe smooth endplasmic reticulum

Answer 5

• Its membrane does not have ribosomes and is associated with the synthesis and transport of lipids, steroids and hormone

Found in large quantities in the liver.