The membrane receptor on the dendrite that receives the neurotransmitter is a type of ______.

Question

BlackTom AI · Accepted Answer

To begin, let's restate the question in our own words: identifying the type of membrane receptor on a dendrite that receives a neurotransmitter. 
Option 1: carrier protein. While carrier proteins participate in transport across membranes, they are not the primary receptors for neurotransmitters on dendrites. They typically shuttle ions or molecules rather than acting as ligand-gated receptors, so this choice is inaccurate in the context of synaptic transmission. 
Option 2: pore. A pore is a passage that allows ions to pass through a membrane, but in neurons, pores are not the receptor per se for neurotransmitters; rather, they are components of channels or pores within channels. This description is too vague and does not specify the receptor type involved in synaptic signaling, making it an unsuitable characterization. 
Option 3: aquaporin. Aquaporins are water channels facilitating rapid water movement across membranes. They are unrelated to neurotransmitter receptors on dendrites, so this option does not fit the scenario of chemical signaling at synapses. 
Option 4: gated ion channel. This describes receptors such as ligand-gated ion channels (e.g., nicotinic acetylcholine receptors) that open in response to a specific neurotransmitter binding, allowing ions to flow and generate postsynaptic potentials. This directly matches the classical mechanism of neurotransmitter reception at dendritic membranes. 
Bringing these considerations together, the receptor that receives neurotransmitter signals on the dendrite is best described as a gated ion channel, which aligns with the fundamental model of fast synaptic transmission. The other options fail to capture the receptor function or describe unrelated membrane components, making them incorrect in this context.

APBIO141-031 with labs 11.01 to 11.04 - Video Quiz

The membrane receptor on the dendrite that receives the neurotransmitter is a type of ______.

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