Unit 1.2b(iii)

Question 1

once the transmembrane protein has moved from the ER to the Golgi apparatus, what happens to it?

Answer 1

The protein undergoes post-translational modifications

Question 2

What is the main translational modification proteins undergo?

Answer 2

The addition of a carbohydrate group

Question 3

How is a carbohydrate formed?

Answer 3

It’s formed by enzymes catalysing the addition of various sugars

Question 4

What is undergoing post-translational modifications what happens to the protein?

Answer 4

It moves through the Golgi apparatus

Question 5

How does a protein move through the Golgi apparatus?

Answer 5

It moves through the Golgi apparatus by vesicles budding off of Golgi discs and moving onto the next stack

Question 6

How does a protein leave the Golgi apparatus and where does it go?

Answer 6

Proteins leave the Golgi apparatus via vesicles, which carry it to the plasma membrane and lysosomes