Male sticklebacks that see a model of a fish with a red belly will attack it, thinking it is a breeding male. They do not attack model fish without a red belly. This is an example of

A. learned behavior.
B. imprinting.
C. fixed action pattern.
D. taxis.
E. reflex.


C. fixed action pattern.

Biology & Microbiology

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Classical conditioning such as the salivating of Pavlov's dog in response to a metronome is based on a(n)

A. operant condition. B. sign stimulus. C. involuntary response. D. dishabituation. E. critical period.

Biology & Microbiology

Chemical signaling molecules that diffuse across a chemical synapse are called

a. neurotransmitters. b. enzymes. c. neurostimulators. d. neuron releasing factors. e. ion carriers.

Biology & Microbiology

In the Calvin-Benson or C3 photosynthetic pathway, the enzyme rubisco catalyzes the reaction called

A) chemosynthesis. B) carboxylation. C) photoreduction. D) respiration.

Biology & Microbiology

____ help(s) unfolded or misfolded proteins achieve their proper three-dimensional conformation

A) ribonuclease B) molecular chaperones C) endoplasmic reticulum D) ribosomes

Biology & Microbiology