Membrane potential is determined by:

A. the number and types of proteins present
in the plasma membrane of a cell.
B. the difference in concentration of ions and
charged molecules across the plasma
membrane of a cell.
C. the number and type of phospholipids
present in a membrane.
D. the concentration of cholesterol in a
membrane.


B

Biology & Microbiology

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Degenerative joint disease (DJD) commonly affects the knee joints because ___________

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The lethality of most monosomies and trisomies in humans shows:

A. the importance of gene dosage. B. the deleterious effects of variable number tandem repeat sequences. C. the advantage of sexual reproduction. D. the rarity of gene copy number variation in the genome.

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The cytoplasm and most organelles in a zygote derive primarily from

a. the oocyte. b. the sperm. c. a combination of the sperm and egg. d. the zygote, which produces its own new organelles

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The total magnification using a 10X ocular and a 100X objective would be (110/1000/10000)×. (Be sure your answer is a numeral.)

Fill in the blank(s) with the appropriate word(s).

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