All of the following can be true of cloning vectors
EXCEPT that they
a. are plasmids that slip into a host cell.
b. are plasmids that accept foreign DNA.
c. can be engineered to contain multiple cloning
sites.
d. are portions of the main bacterial chromosome.
e. can be viruses.
Answer: d
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Organisms from all classifications of life are composed of cells
A. true B. false
The process of diffusion requires:
A. a concentration gradient. B. ATP energy. C. the random movement of molecules. D. transport proteins.
What is the loss of fertilizer and pesticides from soil by water moving through it?
A) the pesticide treadmill
B) biomagnification
C) soil erosion
D) runoff
A particular carbon isotope has an atomic number of 6 and an atomic mass of 14. The respective number of neutrons, protons, and electrons that this carbon isotope has is _______.
Fill in the blank(s) with the appropriate word(s).