MODULE 2: protein secretion in eukaryotic cells

Question 1

stage 1

Answer 1

Transcription occurs in the nucleus and mRNA is copied from DNA and the mRNA leaves the nuclear envelope via a nuclear pore

Question 2

stage 2

Answer 2

The mRNA travels to the RER and binds to a ribosome as ribosomes are where the protein is synthesised.

Question 3

stage 3

Answer 3

The RER packages the protein into a vesicle which surrounds the protein

Question 4

stage 4

Answer 4

The vesicle travels to the Golgi body which package and process the protein into secretory vesicles.

Question 5

stage 5

Answer 5

The vesicle travels to the plasma membrane where exocytosis occurs in which the vesicle fuses w the plasma membrane and releases the protein

Question 6

what is a vesicle?

Answer 6

A temporary vacuole that contains proteins and transports them around the cell or out of the cell.

Question 7

what is a cytoskeleton

Answer 7

The cytoskeleton is a structure that assists in transporting material around the cell, maintains cell shape and supports cell’s organelles and keeps them in position