BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Glucose is a hexose, with six carbon atoms (Fig. 5.41), and an aldehyde-aldose monosaccharide. Fructose is also a hexose, but a ketose. Fig.

Detailed explanation-2: -Ribose is a single-ring pentose [5-Carbon] sugar. The numbering of the carbon atoms runs clockwise, following organic chemistry rules.

Detailed explanation-3: -Carbohydrates do not always make five-membered rings. Sometimes they make six-membered rings instead. A five-membered ring with an oxygen in it is called a furanose. A six-membered ring with an oxygen in it is called a pyranose.

Detailed explanation-4: -Glucose is six membered ring, while fructose is a five-membered ring. Both rings contain an oxygen atom.