Attributes of an organism that promote pathogenicity are called
A. disease factors.
B. colonization factors.
C. mutualistic.
D. virulence factors.
D
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Phosphofructokinase (PFK) is an enzyme that converts fructose 6-phosphate to fructose 1,6-bisphosphate, by adding a phosphate group. This is the first committed step of the metabolic pathway of glycolysis, and thus it is very tightly regulated. AMP binds to PFK at a site distinct from the binding site for fructose 6-phosphate, and stimulates the formation of fructose 1,6-bisphosphate. ATP binds to PFK at a site distinct from the binding site for fructose 6-phosphate, and inhibits the formation of fructose 1,6-bisphosphate. There are other regulators of this enzyme as well. What is the role of AMP in this example?
A. noncompetitive inhibitor B. allosteric inhibitor C. catalyst D. competitive inhibitor E. allosteric activator
Which of the following is generally NOT considered an ethical issue regarding recombinant DNA technology?
A. the modification of crop plants B. screening of humans for genes that predispose them to disease C. unforeseen impact on the environment D. the modification of animals to produce pharmaceuticals for humans E. answering basic research questions
Which of these is associated with pre-embryonic development?
A. embryonic disk B. formation of the umbilical cord C. primary germ layers D. gastrulation E. morula
Lipids DO NOT FORM TRUE ___________.
Fill in the blank(s) with the appropriate word(s).