All of the statements below are true. Select the statement that best supports the view of most biologists that viruses are nonliving.
a) The viral genome may be single-stranded or double-stranded RNA or DNA.
b) Viruses are obligate intracellular parasites.
c) An isolated virus is unable to replicate its genes or regenerate ATP.
Answer: c) An isolated virus is unable to replicate its genes or regenerate ATP.
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Which of the following enzymes or enzyme subunits does not rely on ATP hydrolysis for its correct function?
A. DnaB helicase B. primase C. Pol III clamp loader D. DnaA E. DnaC
Which branch of biology examines the form and variety of organisms in their natural environment?
a. taxonomy b. natural history c. comparative morphology d. biogeography
e. geologyRhythmic leaf folding is an example of
a. positive feedback. b. division of labor. c. circadian rhythms. d. homeostasis. e. negative feedback.
A ____ forest included low swamps with giant ferns, horsetails, club mosses, seed ferns, and early gymnosperms
a. Jurassic b. Silurian c. Devonian d. Ordovician e. Carboniferous