carbon in soil
What will be an ideal response?
soil contains more carbon than both biomass and atmosphere combined
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Genome analysis has revealed that horizontal gene transfer is frequently mediated by phages.
Answer the following statement true (T) or false (F)
An increase in the extracellular concentration of salts will cause body cells to
A. lose water and shrink. B. lose water and swell. C. gain water and shrink. D. gain water and swell. E. metabolize water and heat up.
All of the following pertain to virus envelopes except
A. located between the capsid and nucleic acid. B. gained as a virus leaves the nuclear membrane. C. gained as a virus leaves the host cell membrane. D. help the virus particle attach to host cells. E. contain special virus proteins.
What is the most probable basis for the evolution of mitochondria and chloroplasts?
a. Bacteria can be taken up by host cells. b. Light is an energy source. c. ATP can carry energy. d. Oxygen is a by-product of photosynthesis. e. Energy can be transformed from one form to another.