Transgenic organisms are used to aid studies of:
a. genetic diseases. d. viral diseases.
b. gene expression. e. genes involved in cancer development.
c. immune system function
ANS: A, B, C, D, E
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As the difference in reduction potential between a redox pair increases, the amount of free energy made available ________.
A. decreases B. remains the same C. increases D. cannot be determined
Which one of the following enabled eukaryotes to evolve complex life cycles and programs of multicellular development?
A. binary fission B. complex patterns of gene regulation C. a dynamic cytoskeleton D. sexual reproduction
. The main forms of nitrogen taken up by plant roots and useful to plants is:
A. N-N B. nitrite C. nitrite and nitrate D. ammonia and N-N E. nitrate and ammonia
Place the following steps of organogenesis in the correct order: (1 ) neural crest cells break away, (2 ) neural folds grow into a neural tube, (3 ) the notochord induces development of the neural plate
A) 2, 3, 1 B) 1, 2, 3 C) 1, 3, 2 D) 3, 2, 1 E) 3, 1, 2