golgi apparatus

Question 1

structure

Answer 1

similer to ser but more compact. consists of a stack of membranes that make up flattened sacks, cisternae, with small rounded hollow structures called vesicles.

Question 2

how it works

Answer 2

the proteins and lipids produced by the er are passed through the g.a in strict sequence. the g.a modifies these proteins often adding non-protein components, eg. carbohydrate, to them. it also ‘labels’ them so they are sent to the correct destinations.

Question 3

functions

Answer 3

• add carbohydrates to proteins to form glycoproteins
• produce secretory enzymes, eg. those secreted by the pancreas
• secrete carbohydrates, eg. those used in making cell walls in plants
• transport, modify and store lipids
• form lysosomes

Question 4

especially well developed where

Answer 4

in secretory cells, eg. epithelial cells that line the intestines