Which position of a codon is generally the least important in determining which amino acid the codon codes for?
A) the first
B) the second
C) the third
D) None of them, they are all equally important.
C
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A sample of radium is usually a little warmer than its surroundings because
A. it efficiently absorbs and releases energy from sunlight. B. it is radioactive. C. it emits alpha and beta particles. D. its atoms are continually being struck by alpha and beta particles.
Benthic plants that live on the seafloor are called ____________________ and benthic animals that live on the
seafloor are called ________________ Fill in the blank(s) with the appropriate word(s).
Patterns of wind circulation that change with the season are called ____
a. trade winds b. westerlies c. monsoons
d. easterlies e. doldrums
The most effective way to reduce smoking in children in the United States has been to
A) raise taxes on cigarettes. B) prohibit the use of cigarettes by characters in movies and on TV. C) ban cigarette sales within a half-mile of schools. D) ban cigarette sales to people under the age of 18.