Nucleotides in general has three components. First is the phosphate group that acts as a backbone for the final nucleic acid formed. Second is the pentose sugar which is a 5 carbon sugar; in DNA the sugar is deoxyribose and in RNA the sugar is ribose. Third is the nitrogenous base; it can either be adenine, guanine, cytosine, thymine (in DNA) or uracil (in RNA).
Carbon dioxide is transported in the blood in three ways: 1) dissolved in solution 2) bound to proteins 3) buffered with water
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