What category of proteins facilitates the movement of ions and molecules across membranes?

A. regulatory proteins
B. protective proteins
C. transport proteins
D. cell-signaling proteins
E. motor proteins


C. transport proteins

Biology & Microbiology

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Which United States marine science center is not on the Pacific Coast?

a. Scripps Institute of Oceanography. b. Rosenstiel School of Marine and Atmospheric Science. c. Duke University Marine Laboratory. d. Harbor Branch Oceanographic Institute.

Biology & Microbiology

Which of the following has a single strand of DNA shaped like a loop?

a. Plasmids b. Prokaryotes c. Eukaryotes d. Gametes

Biology & Microbiology

Worldwide, the major cause of hemolytic anemia is ____

a. malaria b. leukemia c. infectious mononucleosis d. anemia e. toxemia

Biology & Microbiology

The phenomenon known as phototropism is due to the plant hormone ________, which regulates cell growth.

A. cytokinin B. gibberellin C. abscisic acid D. auxin

Biology & Microbiology