Gel electrophoresis separates DNA fragments on the basis of differences in their ________
A) A:C ratio
B) length
C) G:T ratio
D) pH
B
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Which of the following viral components is
NOT typical of a plant virus?
a. RNA b. protein coat c. helical structure d. viral envelope e. more than one of these is NOT typical of a plant virus
The conversion of solar energy to chemical
energy is known as a. metabolism. b. photosynthesis. c. chemosynthesis. d. catabolism. e. anabolism.
The large crowns of pronghorn molars are an
adaptation to a. the size of their jaws. b. the type of food that they eat. c. the soft texture of their food. d. the high acid content of their mouths. e. none of these.
How long did it take in the history of life on Earth to go from the first prokaryotic cells to the first eukaryotic cells?
A) 1,000 years B) 100,000 years C) 1 million years D) Over a billion years