Which of the following is associated with dental caries?
A. Lactococcus lactis
B. Streptococcus mutans
C. Enterococcus faecalis
D. Streptococcus pneumoniae
Answer: B
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The gastrointestinal microbiota has been implicated in the development of
A. appropriate immune responses to microbial antigens. B. dental plaque. C. non-infectious diseases like obesity. D. All of the responses are correct.
Each of the following are true of enzymes except
A. their action may involve minerals. B. they can be used over and over. C. they may or may not require cofactors. D. they increase the activation energy of a reaction. E. their active site is specific to the substrate.
Four of the five answers listed below are structures through which ingested foodstuffs travel. Select
the exception. a. duodenum b. liver c. esophagus d. rectum e. small intestine
Fuels such as gasoline are nonpolar and have high potential energy because they are largely composed of
A. hydrocarbons. B. alcohols. C. carboxylic acids. D. amines. E. sulfates.