E.R

Question 1

2 different types

Answer 1

rough and smooth

Question 2

rough er

Answer 2

has ribosomes present on the outer surface of the membranes

Question 3

functions of RER

Answer 3

• provide a large surface area for the synthesis of proteins and glycoproteins
• provide a pathway for the transport of materials, especially proteins, throughout the cell

Question 4

smooth er

Answer 4

lacks ribosomes on its surface and is often more tubular in appearance

Question 5

functions of ser

Answer 5

• synthesise, store and transport lipids

- synthesise, store and transport carbohydrates

Question 6

what type of cells would have an extensive er

Answer 6

cells that manufacture and store large quantities of carbohydrates, proteins and lipids. (eg. liver cells and secretory cells, such as the epithelial cells that line the intestines)