| Date | May 2017 | Marks available | 1 | Reference code | 17M.1.SL.TZ2.29 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 29 | Adapted from | N/A |
Question
If schizophrenia is caused by an overabundance of the neurotransmitters dopamine and serotonin in the synapses of some areas of the brain, which drug action could work in treating the symptoms?
A. Release of cholinesterase into the synaptic cleft
B. Increased re-uptake of dopamine and serotonin by presynaptic neurons
C. Increased permeability of the presynaptic neuron to sodium
D. Blockage of dopamine and serotonin receptors on presynaptic neurons
Markscheme
B
Examiners report
[N/A]
