Which of the following is true about two-dimensional gel electrophoresis?
A. The first dimension separates proteins based on their size.
B. The second dimension separates proteins based on their isoelectric point (pI).
C. The first dimension separates proteins based on their density.
D. The second dimension separates proteins based on their size.
E. The second dimension separates proteins based on their charge.
D
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Taq polymerase is
A. a reverse transcriptase. B. an RNA polymerase. C. from E. coli. D. a heat-stable DNA polymerase from Thermus aquaticus. E. an RNA polymerase AND from E. coli.
Which of the following inaccurately represents normal forces across capillary walls?
A) Interstitial fluid oncotic pressure is almost zero. B) At rest, net filtration occurs across capillary walls. C) Interstitial fluid hydrostatic pressure increases from arteriole end to venous end. D) Capillary hydrostatic pressure decreases from arteriole end to venous end. E) Capillary oncotic pressure is due primarily to plasma proteins.
How many of the animal phyla include single-celled animals?
A) 0 B) 1 C) 2 D) 3
Suppose that your mother and father both have cystic fibrosis, which is caused by a recessive allele. What are the odds of you having cystic fibrosis?
a. 1 b. 3 in 4 c. 1 in 2 d. 1 in 4