BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Hence, the true statement is the vertical lines are oriented away from you and the horizontal lines are oriented towards you.

Detailed explanation-2: -Fischer projections can be used to represent chiral molecules and differentiate between pairs of enantiomers in biochemistry and organic chemistry.

Detailed explanation-3: -Fischer projections In a Fischer projection the carbohydrate is shown in its open chain form, rather than a cyclical one. Carbon atoms in the main chain of the carbohydrate molecule are connected vertically, whilst hydrogen atoms and hydroxyl groups are bonded horizontally.

Detailed explanation-4: -With the #4 ranked substituent pointing “in the back”, we trace the path from the groups ranked #1, #2, and #3. If that path is clockwise, the chiral center is R. If the path is counter-clockwise, the chiral center is S. However, many Fischer projections are not drawn so helpfully with the #4 group in the back.