Which of the following techniques describes either the rate of a molecule's migration or its final position in a gel?
A) hybridization
B) electrophoretic mobility
C) densitometry
D) restriction fragment analysis
E) peptide fingerprint analysis
B
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What area of the brain consists of highly folded gray matter?
a. cerebral cortex b. cerebellum c. midbrain d. pons e. medulla oblongata
Animals need O2 because it ________
A) plays a role in obtaining energy from food B) helps animals synthesize proteins C) is necessary to make CO2 D) is needed to deliver hemoglobin to the cells of an animal's body
Two strands of DNA that have been cut by an endonuclease can be sealed together by a(n)
A. methylase enzyme. B. protease enzyme. C. polymerase enzyme. D. ligase enzyme. E. exonuclease enzyme.
Which of the following is transmitted by the fecal-oral route?
A. Entamoeba histolytica B. Plasmodium C. Schistosoma D. Trichomonas E. Schistosoma and Trichomonas