What do restriction endonucleases do?
a. break phosphodiester bonds
b. break ester bonds
c. break glycosidic bonds
d. break peptide bonds
e. break hydrogen bonds
A
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DNA fingerprints, such as those first used by Alec Jeffries, reveal variations in _____ between different individuals
a. blood type b. cancer-causing mutations c. transgenes d. the locations of restriction enzyme recognition sites e. STR alleles
Acid precipitation can have a pH as low as 3
Indicate whether the statement is true or false.
What are the stinging organelles of Cnidarians called? a. Collar cells b. Nerve nets c. Nematocyst d. None of these choices
e. Mesoglea
Why does Dallas, Texas, have a higher yearly average temperature than Chicago, Illinois?
A) Dallas is at a higher latitude than Chicago. B) Chicago experiences more prevailing westerly winds than Dallas. C) Dallas receives more solar irradiance than Chicago. D) Dallas is closer to a large body of water, than is Chicago.