Question

Synaptic plasticity is largely dependent on the increase of which ion in the

postsynaptic cell?
A. H+
B. Na+
C. K+
D. Ca2+

Answer 1

Synaptic plasticity is largely dependent on the increase of D) Ca2+ ions in the postsynaptic cell, which initiates a signaling cascade that can lead to long-term potentiation (LTP) or long-term depression (LTD) of the synapse. Hence, D) is correct.

Step-by-step explanation:

Synaptic plasticity is largely dependent on the increase of Ca2+ ions in the postsynaptic cell. When an action potential reaches the axon terminals, voltage-gated Ca2+ channels open, allowing Ca2+ ions to enter the cell.

The increase in Ca2+ concentration initiates a signaling cascade that can lead to long-term potentiation (LTP) or long-term depression (LTD) of the synapse, which are forms of synaptic plasticity.