An enzyme catalyzes a substrate into a final product. When the concentration of the final product is high enough, it binds to a regulatory site on the enzyme
This binding at the regulatory site changes the shape of the enzyme, which prevents it from binding the substrate and prevents formation of more final product. This is an example of a(n) _______________.
A. posttranslational modification
B. allosteric enzyme
C. translational repressor
D. methylation
B
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In the lipid bilayer of the plasma membrane, the fatty acid tails of the phospholipids face one another in the center of the membrane.
a. true b. false
Which protein is responsible for the initial step in unwinding the DNA helix during replication of the bacterial chromosome?
What will be an ideal response?
Showy flowers are most likely pollinated by
a) water only. b) wind only. c) insects or birds.
Cycles of fever, chills, anemia and headache along with passage of dark colored urine are the symptoms of infection with
A) yellow fever virus. B) P. vivax. C) P. ovale. D) P. falciparum. E) dengue virus.