Which codon halts ribosomes?
A) UAG
B) AUG
C) UUU
D) ATG
A) UAG
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Which of the following viruses would most likely have reverse transcriptase?
A) an RNA-based lytic virus B) an RNA-based lysogenic virus C) a DNA-based lytic virus D) a DNA-based lysogenic virus
Which statement about the reductive division of meiosis is false?
A. During the reductive division, homologues migrate to opposite poles of the cell. B. During the reductive division, sister chromatids migrate to opposite poles of the cell. C. During the reductive division, centromeres do not divide. D. At the end of the reductive division, each daughter nucleus has one-half as many centromeres as the parental nucleus.
Photosynthesis occurs in many branches of the eukaryotic tree
A. true B. false
Legumes, such as beans or peas
A) form mutualistic associations with nitrogen-fixing bacteria. B) form mycorrhizal associations to increase nitrogen fixation in the soil. C) form parasitic relationships with other photosynthetic plants. D) fix N2 from the atmosphere in their leaves.