Which of the following is a technique for separating charged molecules based on size and charge?
a. cloning
b. recombinant DNA
c. plasmid configuration
d. gel electrophoresis
d. gel electrophoresis
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Excreting ammonia directly into the environment (select all correct choices):
A. is energetically inexpensive. B. requires high volumes of water. C. is energetically expensive. D. requires little water. E. converts it into a less toxic form.
The surface ocean currents will circulate __________ in the Northern Hemisphere and __________ in
the Southern Hemisphere.
Fill in the blank(s) with the appropriate word(s).The pulmonary circuit
a. involves the hepatic portal vein. b. moves oxygenated blood to the lungs. c. includes the coronary arteries. d. leads to, through, and from the lungs. e. does all of these.
The aminoglycosides directly target which structure of the bacterial cell?
A) 30S ribosomal subunit B) 50S ribosomal subunit C) cell wall D) plasma membrane