BIOMOLECULES AND ENZYMES

BIOLOGY

CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Each carbohydrate molecule is composed of the following EXCEPT ____
A
nitrogen
B
carbon
C
oxygen
D
hydrogen
Explanation: 

Detailed explanation-1: -Some carbohydrates contain the elements, nitrogen and sulphur. One of the carbon atoms forms a carbonyl (aldehyde or ketone) group whilst the other carbon atoms exhibit hydroxyl groups.

Detailed explanation-2: -The correct answer is Fats. Fats do not contain nitrogen.

Detailed explanation-3: -There are four major classes of biological macromolecules-carbohydrates, lipids, proteins, and nucleic acids. Each are made up of different elements. Nitrogen is found in two of these macromolecules-proteins and nucleic acids.

Detailed explanation-4: -Proteins contains nitrogen. They are large biological molecules or macromolecules, consisting of one or more long chains of amino acids (organic compounds composed of amine (−NH2) and carboxylic acid(−COOH)).

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