A group of proteins with actions including antiviral activity are the:a
tumor necrosis factors
b. chemokines.
c. complement systems.
d. interleukins.
e. interferons
e
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The chytrids in these micrographs are Batrachochytrium dendrobatidis. What reproductive form do chytrids use that distinguishes them from other fungi?
a. ascospores
b. zygospores
c. zoospores
d. basidiospores
Some bacteria in the deep oceans use iron as an
energy source to make carbohydrates from carbon dioxide. These bacteria would be classified as
a. chemoautotrophs. b. chemoheterotrophs. c. photoautotrophs. d. photoheterotrophs. e. decomposers
Bacteria can exchange genes with other
bacteria by a method called
a. binary fission. b. meiotic recombination. c. conjugation. d. translation. e. compilation
What determines the primary structure of a DNA molecule?
a. the sugar-phosphate backbone b. complementary base pairing and the formation of hairpins c. the sequence of deoxyribonucleotides d. the sequence of ribonucleotides