Suppose that acetylcholine binds its receptor on the surface of a muscle cell. What happens next?
a. A sodium gate opens.
b. G protein is activated.
c. Tyrosine is phosphorylated.
d. Tyrosine kinase is activated.
e. A neurotransmitter crosses the synapse.
a
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Memory is ____
a. the storage and retrieval of sensory or motor experience b. the response to stimuli based on experiences c. the awareness of ourselves and surroundings d. voluntary e. involuntary
The function of heart valves is to ____
a. form blood cells b. participate in immunity c. prevent backflow of blood d. prevent clot formation e. push blood into the aorta
Wetlands in which considerable amounts of water are retained by an accumulation of partially decayed organic matter are referred to as ________
Fill in the blank(s) with correct word
_____ and ________ are tumor suppressor genes.
Fill in the blank(s) with the appropriate word(s).