Methanogens are classified as ____

a. photoautotrophs
b. chemoautotrophs
c. photoheterotrophs
d. chemoheterotrophs
e. chemotrophs


b

Biology & Microbiology

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The superior vena cava is indicated by

a. A. b. B. c. C. d. D. e. E.

Biology & Microbiology

Cardiac muscle cells are associated with

a. bundles. b. a sheath of dense connective tissue. c. voluntary responses. d. cells tapered at both ends. e. communication junctions.

Biology & Microbiology

Oxidation and reduction reactions are chemical processes that result in a gain or loss of

A. protons. B. atoms. C. molecules. D. neutrons. E. electrons.

Biology & Microbiology

Voluntary muscle control is one of functions of the

A) cerebellum. B) cerebrum. C) spinal cord. D) brain stem. E) meninges.

Biology & Microbiology