Which of these statements is true?

a. Transport through carrier proteins occurs more rapidly than through channel proteins.
b. Osmosis transports vitamins and nutrients through a cell’s plasma membrane.
c. Aquaporins facilitate the transport of water through a cell’s plasma membrane.
d. Ions pass through channel proteins by bonding to the protein’s inner surface.


c. Aquaporins facilitate the transport of water through a cell’s plasma membrane.

Biology & Microbiology

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How is active immunity different from passive immunity?

a. Active immunity is slower in onset and shorter-lived. b. Active immunity is slower in onset and longer-lived. c. Active immunity is faster in onset and shorter-lived. d. Active immunity is faster in onset and longer-lived. e. Only active immunity involves antibodies.

Biology & Microbiology

An acid is a substance that, in solution, releases 

A. oxygen ions in H2SO4. B. hydrogen ions, for example, HCl. C. —COOR ions from beer. D. chloride ions from NaCl.

Biology & Microbiology

Minisatellites used for establishing identity, such as paternity, are often called

a. pseudogenes. b. rDNA. c. gene clusters. d. VNTRs. e. fingerprints.

Biology & Microbiology

Expression QTL mapping allows researchers to characterize ________

A) loci that encode phenotypes B) loci that have high mutating rates C) loci that control gene expression D) loci that modify the rate of protein translation

Biology & Microbiology