The number of trophic levels between primary producers and large consumers in coastal waters is usually:
a. one.
b. two.
c. three.
d. four.
e. more than four.
C
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An anticodon is a physical component of ________ molecule.
A) a tRNA B) an mRNA C) an rRNA D) a DNA
The Nernst equation allows you to calculate the
a. resting membrane potential. b. equilibrium potential for each ion. c. membrane potential when all channels are closed. d. membrane potential when all channels are open.
Assume Saccharomyces cerevisiae is grown in a nutrient medium containing the radioisotope 32P. After a 48-hour incubation, the 32P would most likely be found in the S. cerevisiae's
a. Plasma membrane. b. Cell wall. c. Water. d. Proteins. e. Carbohydrates.
Which of the following is important in protein folding after the formation of a polypeptide?
A) hydrogen bonding B) ionic bonding C) van der Waals interactions D) hydrophobic interactions E) hydrogen bonding, ionic bonding, van de Waals interactions, and hydrophobic interactions.