BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Light can be rotated either clockwise or counter-clockwise. If light is rotated clockwise (to the right) it’s called dextrorotation. If light is rotated counter-clockwise (to the left) then it’s called levorotation.

Detailed explanation-2: -Those that rotate the plane clockwise (to the right) are said to be dextrorotatory (from the Latin dexter, “right"). Those that rotate the plane counterclockwise (to the left) are called levorotatory (from the Latin laevus, “left").

Detailed explanation-3: -If a compound rotates plane polarized light in the clockwise (+) direction, it is said to be dextrorotatory, while if it rotates light in the counterclockwise (-) direction it is levorotatory. (

Detailed explanation-4: -Dextrorotatory (d; (+)): A substance that rotates plane polarized light in a clockwise direction.

Detailed explanation-5: -Two examples of dextrorotatory compounds are D-(+)-glyceraldehyde (fig 1) and L-(+)-alanine(fig 2)