The tRNA nucleotide sequence that pairs with bases on the mRNA is called a(n)

A. initiation factor.
B. anticodon.
C. exon.
D. intron.
E. codon.


Answer: B

Biology & Microbiology

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Indicate whether the statement is true or false.

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Gas exchange between the blood and

interstitial fluid occurs via

a. diffusion. b. active transport. c. passive transport. d. endocytosis. e. pressure flow

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The most widely used ecoregion system was developed by conservation scientists of the ____

a. US Department of Agriculture b. Environmental Protection Agency c. International Union for Conservation of Nature and Natural Resources d. World Wildlife Fund e. Intergovernmental Panel on Climate Change

Biology & Microbiology

The signal sequence that targets a polypeptide to the rough ER is rich in _______ amino acids.

a. positively charged b. negatively charged c. hydrophilic d. hydrophobic

Biology & Microbiology