A signal in the environment that makes you react.
Select your answer:
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Other quiz:Biochemistry/Cells › View
What do vacuoles do?
A. They give the cells their shape.
B. They protect the cell.
C. They are the brain of the cell.
D. They are used for storage.
Understanding Psychology Nervous System › View
Voluntary movements, such as raising your hand, are controlled by the
A. Autonomic NS
B. Somatic NS
D. Sympathetic NS