DNA moves in electrophoresis because of the influence of a(n) ___ ___.
What will be an ideal response?
electric charge
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Which of the following would be most effective and practical for routine home disinfection of a kitchen sponge between uses?
A. 70% Isopropyl alcohol B. Hydrogen peroxide C. Chlorine bleach D. Iodophor
Nitrifying Archaea such as Nitrosopumilus maritimus use ________ as a sole carbon source and are capable of obtaining sufficient energy by aerobically oxidizing ________
A) CO2 / NO B) sugars / NH3 C) CO2 / NH3 D) organic acids / NO
The atom found in the greatest amount in the human body, the earth's crust, and seawater is
A. hydrogen. B. carbon. C. nitrogen. D. oxygen. E. phosphorus.
Which of the following cells has the greatest surface-to-volume ratio?
A) bacterium B) human red blood cell C) human muscle cell D) ostrich egg