DRAW IT Start with the linear form of fructose (see Figure 5.3) and draw the formation of the fructosering in two steps, as shown in (a). First, number the carbons starting at the top of the linear structure.Then draw the molecule in a ringlike orientation, attaching carbon 5 via its oxygen to carbon 2. Comparethe number of carbons in the fructose and glucose rings.
Nucleotides
It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).
Nucleic Acids
Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.
DRAW IT Start with the linear form of fructose (see Figure 5.3) and draw the formation of the fructose
ring in two steps, as shown in (a). First, number the carbons starting at the top of the linear structure.
Then draw the molecule in a ringlike orientation, attaching carbon 5 via its oxygen to carbon 2. Compare
the number of carbons in the fructose and glucose rings.
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