Question

Select the correct option:
Read the given statements.
i.fructose is the sweetest sugar.
ii.Glycine is the simplest amino acid.
iii.Lactose is a disaccharide composed of one molecule each glucose and galactose.
iv.Cellulose is an unbranched chain of glucose molecules linked by beta 1, 4 – glycosidic bond.
Which of the following statements are correct?
(a) i and ii
(b) iii and iv
(c) i, ii, and iv
(d) i, ii, iii, and iv

Answer 1

Hint: They are the carbohydrates out of which may one be a monosaccharide or a disaccharide or a polysaccharide depending upon its constituents but are generally made up of glucose while one of them is an amino acid having the most simple structure.

Complete answer:
The fructose is the sweetest out of all the carbohydrates and thus is highly used for commercial purposes. Glycine is an amino acid that has the simplest structure having one hydrogen atom in its side chains. Lactose is a disaccharide that is composed of glucose and galactose. Cellulose is a polysaccharide having many glucose molecules that are linked through beta e, 4 - glycosidic bond.
- Fructose is the dietary monosaccharide that can be absorbed directly into the bloodstream.
- They are made up of sugar beets, sugarcane, and maize having high sugar content.
- Glycine is the proteinogenic amino acid having a function of a neurotransmitter inhibitor that may cause spontaneous paralysis due to uncontrolled muscle contraction.
- Glycine is found in almost all the food products or vegetables and meat that are sold out commercially.
- Lactose is a disaccharide that constitutes around 2 - 8 % of milk by weight and is white in color with very little sweetness.
- The condensation of glucose and galactose will result in the formation of the lactose which is soluble in water.
- Cellulose is a structural subunit that helps in the making of the cell wall in the green plants.
- It is used in the papermaking, wood making industries, etc for commercial purposes.
- It is linked by a Beta 1, 4 - linked bond that joins the carbohydrate molecule to another molecule.
So, the correct answer is ‘i, ii, iii, and iv’.

Note: In 1847 the French chemist Augustin- Pierre Dubrunfaut was the first to discover fructose. In 1857 the English chemist William Allen Miller coined the term fructose. The term fructose was derived from the Latin word fructus, meaning ‘fruit’. In 1820 the French chemist Henri Branconnont discovered the amino acid Glycine. The term Glycine was derived from the Greek word, meaning ‘sweet- tasting’. In 1843 the FRench chemist Jean Baptiste Andre Dumas coined the term Lactose. In 1838 the term Cellulose was derived by the French chemist Anselme Payen.