DNA replication is carried out by which enzyme?
1.RNA polymerase
2.ligase
3.DNA polymerase
4.helicase
5.primase
3
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Control of the lac operon and lactose utilization in bacteria is (select all that apply)A) not induced in the presence of both glucose and lactose.B) only induced when there is glucose but not lactose.C) is a negative control, mediated by a repressor.D) controlled by the expression of three downstream genes.E) preferentially utilizing lactose as a carbon source.
What will be an ideal response?
Which of the following statements is true of purulent exudate?
a. It is present in all inflammatory lesions. b. It contains clear, serum-like fluid with small amounts of protein. c. It contains neutrophils, pus, and bacteria. d. It contains fibrinogen and lots of fluid.
Infection with Helicobacter pylori can cause ________
A) tooth decay B) peptic ulcers C) constipation D) gallstones
Plasmapheresis is the removal of whole blood from the body, separation of its cellular elements and reinfusion of these cellular elements suspended in saline or a plasma substitute
Answer the following statement(s) true (T) or false (F)