Which of the following antibiotics specifically inhibits DNA synthesis?
A. Quinolones
B. Tetracycline
C. Polymyxin B
D. Gentamycin
Answer: A
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Examine the phylogenetic tree depicted in Figure 26.17 as you address the following questions. The Crenarcheota, Korarchaeota, and Thaumarchaeota are three divisions within the Archaea that share a common ancestor
A. true B. false
This specialized structure stores pigments, water, inorganic ions and maintains turgor pressure.
A. Golgi apparatus B. vacuole C. peroxisomes D. vesicles E. lysosomes
Which class of antibody accounts for the bulk of the circulating antibody?
A. IgA B. IgD C. IgG D. IgE
X-ray diffraction studies are used to determine:a
the sequence of amino acids in protein molecules. b. the sequence of nucleic acids in nucleic acid molecules. c. the distances between atoms of molecules. d. the type of chemical under investigation. e. the wavelength of light emitted by chemicals