Which of the following compounds is not a source of electrons for anoxygenic photosynthesis?
A) SH-
B) S2O32-
C) H2O
D) succinate
E) All of the above are used.
C) H2O
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DNA polymerases from Escherichia coli cannot be used to artificially copy gene sequences with a thermocycler
Indicate whether the statement is true or false.
Which of the following is a disadvantage of using corn to manufacture ethanol as a fuel additive?
A. Ethanol contains far less energy than other fuels. B. Ethanol absorbs water and would thus corrode fuel pipelines used in transport. C. Use of corn as a fuel source drives up the cost of grain worldwide. D. All of these are disadvantages.
Which of the following is mismatched?
a. stamen - anther b. carpel - ovary c. carpel - stigma d. petal - filament e. carpel - style
If the population of flowers illustrated in the accompanying Punnett square is in genetic equilibrium, the frequency of
the homozygous dominant genotype in the new generation will be ____. a. p2 b. 2pq c. p2 + q2 d. q2 e. p2 + 2pq