protein synthesis

Question 1

stages of protein syntheses (only what organelles they occur in) IN ORDDER

Answer 1

nucleus
ribosmes
RER vesicles
golgi cisternae
Golgi
lysomes
secretory vesicles
exocytosis (cell membrane)

Question 2

first stage

Answer 2

nucleus - genes instruct the cell what proteins to make.
The rewuired proteins are copied from DNA into mRNA.
mRNA leaves the nucleus through nuclear pores and delivers this to the ribosomes

Question 3

second stage

Answer 3

ribosomes use the mRNA as a template
translated into a protein

done in RER

Question 4

third stage

Answer 4

vesicles from RERmove the newly synthesised proteins

they fuse to form a golgi cisterna

Question 5

fourth stage

Answer 5

golgi sorts the proteins and adds carbohydrate chains to make them glycoproteins

Question 6

fith stage

Answer 6

lysomes bud off from the golgi

secretory vesicles (containing the protein) also bud off from the golgi

Question 7

sixth stage

Answer 7

vesicles fuse with the cell membrane and release proteins outside of cell