Transgenic organisms
A) contain cells from other organisms.
B) contain genetically engineered microbes.
C) are the same as clones.
D) contain genes from other organisms.
E) have genomes that have been sequenced completely.
D
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Another name for bovine spongiform encephalopathy (BSE) is ____________________
Fill in the blank(s) with correct word
In the tropics, warm but nutrient-poor water above continental shelves is often occupied by ____
a. coral reefs b. kelp forests c. rocky shores d. salt marshes e. phytoplankton blooms
All of the following are characteristics of IgM except
A. it contains a central J chain. B. it has 10 antigen binding sites. C. it is the first class synthesized by a plasma cell. D. it is a dimer. E. it can serve as a B-cell receptor.
Plant community structure along an environmental gradient can often be explained by
A) differences among species in their competitive abilities. B) differences among species in their abilities to tolerate stress. C) differences among species in their resistance to herbivores. D) a trade-off among species with respect to competitive ability and stress tolerance.