During anaerobic decomposition of organic matter with carbon dioxide as the terminal electron acceptor, the primary gas(es) produced is/are
A. oxygen.
B. hydrogen sulfide.
C. methane.
D. hydrogen.
E. methane AND hydrogen.
C. methane.
Biology & Microbiology
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At the sensory receptor, sensory stimuli must be converted to an electrical signal in the nervous system. What is this conversion process called?
a. transmission b. reception c. transduction d. perception
Biology & Microbiology
The population is in exponential growth at
a. A. b. B. c. C. d. D. e. E.
Biology & Microbiology
Topsoil is richest in
a. minerals b. sand. c. clay. d. organic matter e. none of these
Biology & Microbiology
One possible result of chromosomal breakage is for a fragment to join a nonhomologous chromosome. What is this alteration called?
A) deletion B) inversion C) translocation D) duplication
Biology & Microbiology