Adrenaline

Question 1

2.

Answer 1

Adrenaline binds to membrane receptor and changes it’s shape, causing it to interact with G-protein in membrane.

Question 2

3.

Answer 2

G-protein splits and part or it activates an adenyl cyclase which converts ATP into cyclic AMP (cAMP).

Question 3

4.

Answer 3

cAMP is the 2nd messenger as it works inside target cells. It stimulates an enzyme cascade of reactions.

Question 4

5.

Answer 4

Adrenaline can have many different effects as it can bind to different target tissue. This stimulates different 2nd messengers and different enzyme cascades.

Question 5

6.

Answer 5

Adrenaline can have large effects in the cell and it stimulates many over steps in a multi-step reaction. Each stage leads to other stages.

Question 6

1

Answer 6

Adrenaline produced in adrenal glands in times of stress. 1st messenger as it binds to specific receptor on CSM of it’s target tissue.