The function of valves in the heart is to

a. form blood cells.
b. participate in immunity.
c. prevent backflow of blood.
d. prevent clot formation.
e. push blood ahead.


C

Biology & Microbiology

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If you were to replace the phosphate group of a phospholipid with a fatty acid chain, you would have

A. glycerol. B. a triglyceride. C. cholesterol. D. glycolipid.

Biology & Microbiology

The elongation of stems is stimulated by

A. ethylene only. B. gibberellin only. C. auxin and gibberellin. D. auxin only. E. auxin and ethylene.

Biology & Microbiology

How does transcription of sporulation genes in B. subtilis involve different sigma factors?

What will be an ideal response?

Biology & Microbiology

The long and complex series of events that occurs when a signal binds to the cell surface and is converted from one form to another is called _____.

-signal transduction -transesterification reaction -action potential -signal cross-wiring

Biology & Microbiology