The principal component of the cell walls of both Gram-positive bacteria and Gram-negative bacteria is _______.
a. chitin
b. cellulose
c. peptidoglycan
d. lipopolysaccaride
Ans: c. peptidoglycan
Biology & Microbiology
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Protocol for testing susceptibility test systems include testing _____ consecutive days
a. daily for 7 b. bi-weekly for 30 c. every other day for 14 d. with use for 20
Biology & Microbiology
Which one is not an amino acid?
a. Proline b. Glycine c. Alanine d. Valine e. Guanine
Biology & Microbiology
A type of symbiosis in which one member of the relationship benefits with no effect on the other is
A. parasitism. B. mutualism. C. commensalism. D. predation. E. intraspecific competition.
Biology & Microbiology
Early successional species are characterized by
A) low body growth rates. B) smaller body size. C) low degree of dispersal. D) low per capita population growth rate.
Biology & Microbiology