Oral flora bacteria on the tooth surface
A. use fimbriae and slime layers to adhere.
B. include streptococci that metabolize sucrose, produce sticky glucans, and form plaque.
C. develop a biofilm.
D. include lactobacilli and streptococci that ferment carbohydrates and produce acids that cause caries.
E. All of the choices are correct.
Answer: E
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Fill in the blank(s) with correct word
A developing country's replacement fertility rate is most directly affected by which factor?
A. Poverty B. Endemic diseases C. Death of children before the age of reproduction D. Environmental factors that disrupt fetal development E. Government-directed population control
Which one of the following does NOT belong with the others?
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In order to reproduce, females of this all-female species must mate with a male from a closely related species to initiate the development of their offspring. The male's genetic material does not, however, enter the Amazon molly's egg. What costs of sexual re-production does the Amazon molly potentially experience? a. None, it reproduces asexually. b. The costs associated with finding a mate. c. The fish may spend energy competing with other females for mates. d. It has no means of turning back Muller's ratchet. e. B and C.