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Bio 1306 vocab for test part 1
Terms in this set (29)
A trait that helps an organism survive and reproduce
digestive tube that extends from the mouth to the anus
the surface of an epithelial cell that faces a lumen, such as that of the intestines
the cell membrane that faces away from the lumen of the GI tract and toward the submucosa
secreted by cells of the upper small intestine and it stimulates the gallbladder to contract and release stored bile into the intestine.
Transport across a cell membrane in which movement of one substance relies on the movement of another in the same direction.
Movement of molecules from an area of higher concentration to an area of lower concentration.
Breakdown of food substances into simpler forms that can be absorbed and used
first part of the small intestine
layer of skin cells forming the outer and inner surfaces of the body
the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins
Digestive hormone that stimulates sustained secretion of gastric juice from the stomach
Digestive chamber with a single opening, in which cnidarians, flatworms, and echinoderms digest food
the chemical breakdown of a compound due to reaction with water.
higher solute concentration
lower solute concentration
the last and longest portion of the small intestine
Intake of food
Integral (transmembrane) proteins
embedded in the membrane
solutions with the same concentrations of solute particles
second part of the small intestine
macromolecule made mainly from carbon and hydrogen atoms; includes fats, oils, and waxes
projections that increase the cell's surface area
Diffusion of water through a selectively permeable membrane
Enzyme that breaks down proteins in the stomach
Involuntary waves of muscle contraction that keep food moving along in one direction through the digestive system.
A type of endocytosis in which a cell engulfs large particles or whole cells
saturated fatty acid
A fatty acid in which all carbons in the hydrocarbon tail are connected by single bonds, thus maximizing the number of hydrogen atoms that can attach to the carbon skeleton.
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