The diagram below represents a synapse - VCE - SSCE Biology - Question 17 - 2012 - Paper 1
Question 17
The diagram below represents a synapse.
It is reasonable to suggest that
A. structure M secretes neurotransmitter molecules.
B. an electrical message travels from ... show full transcript
Worked Solution & Example Answer:The diagram below represents a synapse - VCE - SSCE Biology - Question 17 - 2012 - Paper 1
Step 1
A. structure M secretes neurotransmitter molecules.
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Answer
In a synapse, structure M is typically associated with the release of neurotransmitter molecules into the synaptic cleft. This is a crucial function for communication between neurons.
Step 2
B. an electrical message travels from cell X to cell Y.
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Answer
The electrical signal travels along the axon of cell X, and upon reaching the synapse, it triggers the release of neurotransmitters rather than directly traveling to cell Y.
Step 3
C. structure P supplies energy to transmit a nerve impulse.
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Answer
While structure P may play a role in the transmission of nerve impulses, the energy for transmitting a nerve impulse is primarily derived from the membrane potential and physiological processes within the neuron.
Step 4
D. neurotransmitter molecules diffuse from cell Y to cell X.
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Answer
This statement is correct as neurotransmitter molecules released from cell Y will diffuse back towards cell X in the synaptic cleft, allowing for the continuation of the signal.
