What is the term for selection that favors altruism toward relatives?
A. nepotism
B. mate choice
C. group selection
D. reciprocal altruism
E. kin selection
Answer: E
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Thrush in a newborn's oral cavity becomes less frequent as the infant ages. What is the most likely reason for this?
A. The acquisition of normal microbiota prevents the overgrowth of yeast. B. The infant begins to produce antifungal antibodies. C. Vaccines given in early infancy prevent the development of thrush. D. The eruption of the teeth inhibits the growth of yeast.
The suffix -emia means ________.
A. pertaining to B. tumor C. an inflammation D. blood E. a disease or morbid process
The light source for the technique shown in Image B is a/an:
a) Electron gun b) Tungsten lamp c) Halogen lamp d) Fluorescent lamp
Thiobacillus thiooxidans is found in an environmental sample. Which of the following should then apply to this sample?
A. The sample is very acidic. B. The sample contains lithotrophs. C. The sample contains microbes that oxidize sulfur to sulfates. D. All of the choices are correct.