In an Animal Research Study, Channelrhodopsin Is Inserted into Neurons

Multiple Choice

In an animal research study, channelrhodopsin is inserted into neurons that make GABA (which inhibits neurons) , and halorhodopsin is inserted into neurons that make glutamate (which excites neurons) . Both sets of neurons make connections with a set of neurons responsible for eye blinking. If the eye-blink neurons are stimulated by blue light, the animal will _______ because the _______ neurons will be _______.

A) blink; glutamate; depolarized
B) not blink; GABA; depolarized
C) not blink; glutamate; hyperpolarized
D) blink; GABA; hyperpolarized