A species of cattail inhabits both deep and shallow water in the absence of a competitor but only shallow water in the presence of it. This is an example of

A) a realized niche.
B) a fundamental niche.
C) carrying capacity.
D) coevolution.


A

Biology & Microbiology

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In the illustration below, would the sodium-potassium pump be categorized as a uniporter, symporter, or antiporter?



a. uniporter
b. symporter
c. antiporter
d. none of these

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What carries the signal between a neuron sending a message and the neuron receiving it?

a. threshold value b. action potential c. neurotransmitter d. neurohormone e. resting potential

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Human chorionic gonadotropin stimulates the corpus luteum to secrete

a. FSH. b. LH. c. testosterone. d. progesterone. e. estrogen and progesterone.

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Immune therapy research with potential to work in alleviating both organ rejection and autoimmune disease involves:

A) antibodies. B) regulatory T cells. C) cytotoxic T cell action. D) vaccines.

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