C2.1 Chemical signalling Quiz
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5 questions, one answer each
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1. Which hormone acts through an intracellular receptor?
- A. Insulin
- B. Adrenaline
- C. Testosterone
- D. Glucagon
2. The second messenger in the adrenaline pathway is:
- A. ATP
- B. cAMP
- C. Insulin
- D. Calcium carbonate
3. Interleukins are examples of:
- A. Neurotransmitters
- B. Steroid hormones
- C. Cytokines
- D. Second messengers
4. Binding of insulin to its receptor causes:
- A. Opening of a sodium channel
- B. Phosphorylation of tyrosine inside the cell
- C. Binding of the receptor to DNA
- D. Production of autoinducer
5. In positive feedback, the response:
- A. Reduces the signal
- B. Has no effect on the signal
- C. Increases the signal
- D. Always returns the variable to a set point