All of the following bacteria make polysaccharide capsules with the EXCEPTION of:
A. Staphylococcus aureus
B. Streptococcus pyogenes
C. Bacillus anthracis
D. Streptococcus pneumoniae
Ans: C. Bacillus anthracis
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Replica plating
A. is useful for direct selection. B. is useful for identifying auxotrophs. C. uses media on which the mutant will not grow and the parental cell typewill. D. is used to store strains of bacteria. E. is useful for identifying auxotrophs AND uses media on which the mutant will not grow and the parental cell typewill.
Exhalation
a. is always active. b. is always passive. c. may be both active and passive. d. compresses alveoli. e. may be both active and passive, and compresses alveoli
A protein, like the lac repressor, is said to be ________ because when it binds lactose, it structurally changes and its chemical activity also changes
A) digestive B) allosteric C) structural D) enzymatic E) multimeric
In what way are DNA and RNA similar?
A. Both contain U, C, and G. B. Both contain C, A, and G. C. Both form a double helix. D. Both are single stranded. E. Both contain deoxyribose.