Which of the following would not be a valid reason to use PCR?
(A) Help in analyzing DNA of ancient remains of fossilized wholly mammoth
(B) Help in determining the DNA of a hair sample found at a crime scene
(C) Help in analyzing the genome of a virus
(D) Help transferring DNA from a plasmid containing GFP into E. coli
Answer: (D) Help transferring DNA from a plasmid containing GFP into E. coli
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T cells produce and secrete factors that do not directly interact with invading microorganisms but that augment the body's defense mechanisms. These molecules are called ________.
A. augmetins B. antibodies C. cytokines D. immunogens
Which species of Plasmodium causes the most serious form of malaria?
A. ovale B. malariae C. vivax D. falciparum
The ovarian cycle includes the
a. luteal and secretory phases. b. menstrual and proliferative phases. c. follicular and luteal phases. d. follicular and proliferative phases. e. proliferative and secretory phases.
Which functional group is most prevalent in carbohydrates?
A. Sulfhydrl B. Amino C. Hydroxyl D. Phosphate E. Benzene