In some areas, fluoride is added during the municipal water treatment process in order to help
A) prevent goiter.
B) prevent the growth of bacteria.
C) prevent the development of mental retardation.
D) reduce tooth decay.
Answer: D
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In general, when sexual selection is strong for one sex and weak for the other, we can predict that members of the sex subject to strong sexual selection will be ________, and members of the sex subject to weak sexual selection will be ________
A) choosy; competitive B) aggressive; passive C) competitive; showy D) competitive; choosy
Regulatory regions of a eukaryotic gene all contain which of the following sequences, which regulate transcription of genes located on the same chromosome as the sequences?
A) zinc fingers B) cis-acting regulatory sequences C) homeodomains D) trans-acting regulatory sequences E) leucine zippers
Antibiotics kill bacterial cells but do not (usually) damage human cells by taking advantage of the difference between human and bacterial cells. These differences include
A) bacterial cells have cell walls, human cells do not. B) bacterial ribosomes are larger than those of humans. C) protein synthesis in bacteria is identical to that in human cells. D) bacterial cells have a cell membrane, human cells do not. E) human and bacterial DNA are enclosed in a nucleus.
Agglutination tests are qualitative only, not quantitative.
Answer the following statement true (T) or false (F)