In order for DNA molecules to undergo recombination, ____
a. they must be from the same species
b. their strands must separate as in replication
c. they must be cut and spliced at specific nucleotide sequences
d. one of the two DNA strands must be degraded
e. they must first be transcribed
ANSWER: c
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human population growth is
a. decreasing birth rate. b. increasing carrying capacity. c. decreasing competition. d. increasing death rate. e. exploiting outer space
Which type of chemical bonds are found within a water molecule?
a. hydrogen b. ionic c. polar covalent d. nonpolar covalent e. triple
Which elements are responsible for the greater part of plant wet weight?
a. carbon, nitrogen, oxygen b. carbon, nitrogen, phosphorus c. carbon, oxygen, hydrogen d. carbon, hydrogen, potassium e. carbon, nitrogen, potassium
TCA cycle enzymes are found in the ________ ________ of eukaryotic cells.
Fill in the blank(s) with the appropriate word(s).