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

Biology & Microbiology

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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. 

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Which of the following is mismatched?

a. stamen - anther b. carpel - ovary c. carpel - stigma d. petal - filament e. carpel - style

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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

Biology & Microbiology