The structural RNA of ribosomes is a
A. proenzyme.
B. gene.
C. codon.
D. pre-mRNA.
E. ribosomal RNA (rRNA).
E
Anatomy & Physiology
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In large arteries, the thick layer of elastic fibers is called the
A) tunica intima. B) external elastic membrane. C) tunica media. D) internal elastic membrane. E) tunica externa.
Anatomy & Physiology
The molecule HCl is an example of a(n)
A. electrolyte. B. nonelectrolyte. C. base.
Anatomy & Physiology
The kidneys receive their blood from the
A. inferior mesenteric arteries. B. renal arteries. C. suprarenal arteries. D. superior mesenteric artery. E. celiac trunk.
Anatomy & Physiology
The genetic code is the link between the ________ and the ________ that they represent
A) DNA molecule; 20 amino acids B) mRNA codons; 20 amino acids C) mRNA codons; 64 amino acids D) mRNA anticodons; 20 amino acids E) DNA molecule; 64 amino acids
Anatomy & Physiology