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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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
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 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