Prokaryotic cells do not have a nucleus, but they do have a nucleoid that is not bounded by
What will be an ideal response?
a nuclear envelope
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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. Competitive inhibitor B. Noncompetitive inhibitor C. Allosteric inhibitor D. Allosteric activator E. Catalyst
One of the ways that two species can be compared, and information about the genetic basis of human diseases extracted, is by using their sequenced genomes and
A. looking at the allelic differences. B. investigating the introns. C. looking at the conserved sequences. D. exchanging genomic information between them.
All the products of oogenesis are equal in size and content.
Answer the following statement true (T) or false (F)
Fever help the body fight infection in all of the following ways except:a
Increased body temperature increases phagocytosis. b. Fever causes the breakdown of lysosomes, which destroys infected cells. c. Fever inhibits the growth of some microorganisms. d. Fever promotes lymphocyte activity. e. Fever increases capillary permeability