The gut is lined with epithelial cells with ____________________ that connect the plasma membranes of adjacent cells.
Fill in the blank(s) with the appropriate word(s).
tight junctions
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Rarely, a chromosome’s structure becomes altered
when part of it undergoes __________, __________, __________, or __________. Fill in the blank(s) with the appropriate word(s).
Which federal agency oversees, regulates, and monitors the safety of biotech and pharmaceutical products and medical devices during consumer use?
A) National Institutes of Health B) U.S. Department of Agriculture C) Environmental Protection Agency D) Food and Drug Administration E) National Science Foundation
How would you classify an organism that consumes and digests both plant and animal sources of nutrients?
A) Herbivore B) Omnivore C) Carnivore D) Ruminant
The first cell seen by Robert Hooke using a microscope was a
a. skin cell. b. cork cell. c. blood cell. d. root tip cell. e. sperm cell.