Bacterial strains that have distinct antigenic properties are called ________.
Fill in the blank(s) with the appropriate word(s).
serovars
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Which of the following involves an increase in entropy?
A) hydrolysis B) reactions that join monomers C) polymerization D) chemical evolution
The pyramid of energy illustrates
a. the first law of thermodynamics. b. the diminishing of usable energy as it is transferred through an ecosystem. c. that energy can be recycled. d. the biological magnification of materials in an ecosystem. e. the diminishing number of organisms at each trophic level.
Knoblike sacs where the inner colon lining protrudes through the intestinal wall are called
a. diverticula. b. ulcers. c. haustra d. sphincters. e. appendices.
What triggers the entry of a cell into mitosis?
a) the addition of inhibitory phosphate groups to Cdk1 by the Wee1 kinase b) the removal of inhibitory phosphase groups from Cdk1 by the Wee1 kinase c) the addition of inhibitory phosphate groups to Cdk1 by the Cdc25 phosphatase d) the removal of inhibitory phosphate groups from Cdk1 by the Cdc25 phosphatase