Which of the following PCR procedures includes all of the others?
A. DNA is amplified for one cycle.
B. Primers are extended at 72oC.
C. DNA is denatured at 95oC.
D. DNA is reannealed at 50oC
Answer: A
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What is the function of the major histocompatibility complex?
A. It promotes phagocytosis by binding to antigens. B. It facilitates antigen recognition by T cell receptors. C. It triggers endocytosis of the antigen. D. It stimulates cell division.
Which of the following could explain how 14 genes for globins, each specialized in their function (i.e., hemoglobin, myoglobin), arose in the genome?
A. misaligned crossover B. gene deletion C. gene mutation D. misaligned crossover and gene mutation E. misaligned crossover and gene deletion
Why do electron microscopes have the ability resolve such small objects?
a. Because electrons have a much shorter wavelength than the photons of visiblelight b. Because electrons have a much longer wavelength than the photons of visiblelight
Which tissue lines all internal surfaces and the lining of the gut?
A. Epithelial B. Loose connective C. Supportive connective D. Fibrous E. Adipose