Air flow into and out of the lungs is an example of

A) bulk flow.
B) facilitated diffusion.
C) active transport.
D) osmosis.
E) diffusion.


A

Biology & Microbiology

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In humans, the cervical vertebrate (neck bones) are part of the:

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Flowering can be regulated by light, temperature, gibberellin levels, or internal factors. What do all of these different flowering pathways have in common?  

A.  All four pathways result in a decrease in LEAFY (LFY) expression, which induces flowering. B.  All four pathways result in an increase in CONSTANS (CO) expression, which induces flowering. C.  All four pathways result in an increase in LEAFY (LFY) expression, which induces flowering. D.  All four pathways result in a decrease in CONSTANS (CO) expression, which induces flowering.

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About __________ species of birds have been described

a. 1,000 b. 2,000 c. 4,500 d. 9,000 e. 20,000

Biology & Microbiology

What types and subtypes of photoreceptors are present in the retina?

What will be an ideal response?

Biology & Microbiology