Plants are raised under artificial lights turned off and on by an electric clock. Some are given long periods of light, others short periods. This is an example of:

A. deductive reasoning
B. a hypothesis
C. inductive reasoning
D. an experiment
E. a theory


D. an experiment

Biology & Microbiology

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The image shown above is an example of a(n) ____

a. random coil b. leucine zipper c. ? sheet d. ? helix e. ? polysaccharide

Biology & Microbiology

Members of the Archaea differ from members of the Bacteria (or eubacteria) in that only the members of the Archaea have

a. different lipids in their membranes. b. a nuclear membrane. c. enzymes to carry out respiration in their plasma membranes. d. a peptidoglycan cell wall. e. a variety of morphologies, including cocci and vibrios.

Biology & Microbiology

This portion of photosynthesis is a series of oxidation-reduction reactions during which light energy is transferred to electrons so that the electrons move more rapidly. 

A. light-dependent reactions B. proton pump C. light capturing events D. light-independent reactions

Biology & Microbiology

Based on hierarchical levels of biological organization, which represents the broadest level?

A. school of piranhas B. jaguars, giant anteaters, macaws, capybaras C. three-toed sloths D. Amazon Basin E. endocrine system

Biology & Microbiology