Which technique(s) is/are used to help identify and classify bacteria?
A. Microscopic examination
B. Culture characteristics
C. Biochemical tests
D. Nucleic acid analysis
E. All of the choices are correct.
E
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Which of the following is the strongest evidence that protein structure and function are correlated?
A) Proteins function best at certain temperatures. B) Proteins have four distinct levels of structure and many functions. C) Enzymes tend to be globular in shape. D) Denatured (unfolded) proteins do not function normally.
The benthic jellyfish ____ traps plankton to feed on
a. Rhizophysa sp. b. Cassiopeia sp. c. Anthopleura sp. d. Fungia sp.
During the process of filtration, what part of blood passes through the filter?
a. red blood cells b. white blood cells c. plasma proteins d. capillary endothelial cells e. plasma
Gram-negative nitrogen-fixing bacteria found in association with plant roots are
A) alphaproteobacteria. B) betaproteobacteria. C) cyanobacteria. D) gammaproteobacteria. E) deeply branching bacteria.