The raw materials used for photosynthesis include
a. O2.
b. C6H12O6.
c. CO2 & H2O.
d. CH2O.
d
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During which cellular process do all three forms of RNA associate?
A. ribosome assembly B. chromatin formation C. formation of the nucleolus D. protein synthesis
A phosphodiester bond is formed between:
A. a fatty acid and a glycerol molecule. B. two amino acids. C. a base and a sugar. D. a 3' phosphate and a 5' hydroxyl group. E. a 5' phosphate and a 3' hydroxyl group.
If a cell is placed into a hypotonic solution, the concentration of solutes in the solution is higher than the concentration of solutes in the cell.
a. true b. false
Which statement about the beak size of finches on the island of Daphne Major during prolonged drought is true?
A) Each bird evolved a deeper, stronger beak as the drought persisted. B) Each bird's survival was strongly influenced by the depth and strength of its beak as the drought persisted. C) Each bird that survived the drought produced only offspring with deeper, stronger beaks than seen in the previous generation. D) The frequency of the strong-beak alleles increased in each bird as the drought persisted.