The endoplasmic reticulum is a site for
A) potassium storage in muscle cells.
B) drug detoxification by catalase.
C) N-linked glycosylation of polypeptides.
D) addition of lipid residues.
E) both choices B and C
C) N-linked glycosylation of polypeptides.
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Scientists expect water enriched with 137 Cs to reach the west coast of North America by 2015-2020 due _____
a. rising sea levels b. prevailing winds c. drifting kelp forests d. air currents e. deep marine currents
has a disproportionately large effect on a community relative to its abundance
b. controls the prey species c. may increase or decrease the number of prey species in a community d. has a disproportionately large effect on a community relative to its abundance and may increase or decrease the number of prey species in a community e. has a disproportionately large effect on a community relative to its abundance, controls the prey species, and may increase or decrease the number of prey species in a community
A wetland with trees is called a
A) marsh. B) swamp. C) fen. D) bog.
The process of translation is completed when:
A) the cell runs out of ribonucleotides. B) a stop codon moves into the A site. C) the translation machinery reaches the end of the DNA molecule. D) the cell runs out of amino acids. E) the stop codon is severed at the P site.