CH2 organelles of proteinsynthesis

Question 1

Endoplasmic reticulum

Answer 1

Network of membranes enclosing flattened sacs called cisternae

Question 2

SER

Answer 2

Responsible for lipid and carbohydrate synthesis, and storage

Question 3

RER

Answer 3

Has ribosomes bound to surface, responsible for synthesis and transport of proteins

Question 4

Ribosomes

Answer 4

Site of protein synthesis

Question 5

Gogli apparatus

Answer 5

Has a compact structure formed of cisternae, has a role in modifying proteins and packaging into vesicles

Question 6

Stages of protein production

Answer 6

• synthesised on ribosomes bound to endoplasmic reticulum
• pass into cisternae and packaged into transport vessicles
• vesicles move towards gogli apparatus via transport function of cytoskeleton
• vesicles fuse with cis face and proteins enter and are structurally modified then leave at trans face