What represents the most basic level of chemical organization?

a. cell
b. atom
c. tissue
d. molecule
e. organism


b

Biology & Microbiology

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Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?

A) as a pentose B) as a hexose C) as a monosaccharide D) as a disaccharide E) as a polysaccharide

Biology & Microbiology

In the figure above, which label identifies the structure where the vibrations of the oval window pass?

a. 1 b. 2 c. 3 d. 5 e. 7

Biology & Microbiology

Energy ____ in an ecosystem and nutrients ____

a. is cycled continuously; flow one way b. flows in all directions; flow one way c. flows two ways; flow one way d. is cycled continuously; are cycled continuously e. flows one way; are cycled continuously

Biology & Microbiology

Which of the following is an example of antiport?

-simultaneous movement of an amino acid and protons into the cell -simultaneous movement of an amino acid and protons out of the cell -coupling of the inward movement of water with the outward movement of protons -coupling of the inward movement of Na+ with the outward movement of Ca++ -none of the choices are correct.

Biology & Microbiology