Question

1. neurons are activated by which of the following?

○ by sensory
○ by impulses
○ by neurotransmitters
○ by vision

Explanation:

Neurons are activated when chemical messengers called neurotransmitters bind to receptor sites on their dendrites, triggering an electrical signal (action potential). "By sensory" is incomplete, impulses are the electrical signal that travels along the neuron (not the activator), and vision is just one type of sensory input that relies on neurotransmitters to activate neurons.

Answer:

by neurotransmitters