Second Messenger Model (AQA A-Level Biology): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the second messenger model?
What is the second messenger model?
Hormones affect cells without entering them
Which hormone uses the second messenger model to regulate blood glucose?
Which hormone uses the second messenger model to regulate blood glucose?
Adrenaline
Where does the hormone act in the second messenger model?
Where does the hormone act in the second messenger model?
Outside the target cell
What type of receptors bind hormones in the second messenger model?
What type of receptors bind hormones in the second messenger model?
Transmembrane protein receptors
What happens when adrenaline binds to its receptor?
What happens when adrenaline binds to its receptor?
The receptor undergoes a shape change
What enzyme is activated by the receptor shape change?
What enzyme is activated by the receptor shape change?
Adenyl cyclase
What molecule does adenyl cyclase convert ATP into?
What molecule does adenyl cyclase convert ATP into?
cAMP
What is cAMP's role in this system?
What is cAMP's role in this system?
It acts as the second messenger
What does cAMP activate inside the cell?
What does cAMP activate inside the cell?
Protein kinase enzymes
Why is the cascade effect important in this system?
Why is the cascade effect important in this system?
It amplifies the hormone signal