Question

You have carried out a genetic screen for a patient and your results indicate that there is a detrimental mutation in the serotonin transporter. Which of the following would apply to this patient?

Group of answer choices

a. Serotonin will not be synthesized

b. Serotonin will not be released into the synaptic cleft

c. Serotonin will not be taken back into the presynaptic terminal

d. Serotonin will not be taken back into the post-synaptic terminal

e. Post-synaptic neurons will not respond to serotonin

2.

Which of the following typically does not occur during the process of synaptic transmission:

Group of answer choices

a. excess neurotransmitter is enzymatically degraded

b. ion channels are opened

c. neurotransmitter binds to post-synaptic receptors

d. cells divide by meiosis

e. second messenger systems are turned on

Answer 1

Question 1

The correct answer is option c - Serotonin will not be taken back into the presynaptic terminal

Explanation: Serotonin transporter's main function is reuptake of serotonin in the presynaptic terminal from the synaptic cleft. This is an energy dependent process and this reuptake of serotonin terminates the action of serotonin.

Question 2

The correct answer is option d. cells divide by meiosis

Explanation: Only certain specialized cells present in testes or ovary undergo meiosis which is necessary for production of haploid gametes. somatic cells or some specialized cells such as neuron do not undergo meiosis.

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