In gel electrophoresis, DNA molecules move toward the ________ electrode because they have an overall ________ charge.
A. negative; negative
B. positive; positive
C. negative; positive
D. positive; negative
E. negative and positive; neutral
Answer: D
You might also like to view...
What tissues in an animal's body are the targets of genes for behavior?
A. axial skeleton B. forebrain and liver C. nervous system and musculature D. reproductive and urogenital E. innate and instinctual
The Mars expeditions are looking for life in which of
the following? a. air b. rock c. water d. subsurface soil e. archeological sites
Catabolic and anabolic reactions depend upon each other, as evidenced by which of the following statements?
A) Catabolic reactions split bigger molecules into smaller components which are used by anabolic reactions to build more complex molecules. B) Catabolic reactions release energy which is used by anabolic reactions C) Anabolic reactions split bigger molecules into smaller components, which are in turn used by catabolic reactions to build more complex molecules AND catabolic reactions release energy which is used by anabolic reactions. D) Anabolic reactions split bigger molecules into smaller components, which are in turn used by catabolic reactions to build more complex molecules. E) Catabolic reactions split bigger molecules into smaller components which are used by anabolic reactions to build more complex molecules AND catabolic reactions release energy which is used by anabolic reactions.
“Chlorochromatium aggregatum” is a symbiosis between a green sulfur bacterium and a
a. purple sulfur bacterium. b. betaproteobacterium. c. plant. d. fungus.