Four of the five choices listed below are aspects of
recombinant DNA. Select the exception.
a. cloning vector
b. restriction enzymes
c. sticky ends
d. exposed base pairs
e. crossing over
Answer: e
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Bacillus species are facultative anaerobes that can use nitrate as a terminal electron acceptor.
Answer the following statement true (T) or false (F)
Steroid hormones do not require membrane receptors because they
a. are small enough to pass directly through the membrane. b. are lipid-soluble like the bilayer. c. pass through special channels. d. are water-soluble. e. dissolve in the cholesterol of the membranes.
The covalent bond between a hydrogen atom and the oxygen atom in water is formed when:
a. hydrogen gains an electron from oxygen. b. hydrogen and oxygen share an electron pair. c. hydrogen and oxygen both lose electrons from their outer shells. d. hydrogen and oxygen both gain electrons in their outer shells. e. hydrogen gains an electron from oxygen.
The breeding of plants and animals for particular traits by humans is called _______.
A. natural selection B. paleontology C. sexual recombination D. homology E. artificial selection