What property of phospholipids makes them important in cell membranes?

A) They are an important energy carrier molecule.
B) They contain nucleic acids.
C) They have a polar end and a nonpolar end.
D) They are part of DNA.
E) They are found only in animals.


C

Biology & Microbiology

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A) yellow fever B) dengue fever C) rabies D) plague

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One effect of auxin, which triggers the elongation of cells, is to affect cell walls by increasing their  

A.  permeability. B.  plasticity. C.  stiffness. D.  thickness. E.  water solubility.

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In what type of tissue are glands found?

a. epithelial b. connective c. nervous d. muscle e. more than one of these

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The advantage of light microscopy over electron microscopy is that _____

A) light microscopy provides for higher magnification than electron microscopy B) light microscopy provides for higher resolving power than electron microscopy C) light microscopy allows one to view dynamic processes in living cells D) light microscopy provides higher contrast than electron microscopy

Biology & Microbiology