The three parts making up a nucleotide are

A. a purine, a pyrimidine, and a ribose sugar.
?B. a five-carbon sugar, a phosphate group, and a nitrogenous base.
?C. an adenine, a guanine, and a cytosine.?
D. a double helix, a single strand, and a chromosome.?
E. a phosphorous, a deoxygenated ribose, and an amino acid.


B

Anatomy & Physiology

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Briefly discuss the role of the myosin heads in the sliding filament mechanism of muscle contraction

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Anatomy & Physiology