Answer:
ligand; ions; ligand; ions; nervous system
Explanation:
Ligand-gated ion channels are transmembrane protein complexes that open when they bind to their corresponding ligands (e.g., neurotransmitters). This type of receptor is known to modulate the synaptic transmission between neuron cells or neuron and muscle cells. In the nervous system, ligand-gated ion channels located at sites of synaptic contact determine the ion flow in response to neurotransmitter binding. Some examples of ligand-gated ion channels include gamma-aminobutyric acid A (GABA-A) and nicotinic cholinergic receptors.
"an increase in predators" would likely lead to an increase in genetic variation in a population of squirrels, since the squirrels would have to adapt to the new threats.
Explanation:
a current meter turns with the flow of the river a stream . The current meter is used to measure water velocity is predetermined points along a marked line
Answer:
Energy consumption is starting to decrease from past statistics.
Explanation:
Based on the selections given, it can be inferred that the student's favorite food of about 1/3 of the students is pizza.
