BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Explanation: Carbohydrates are the only biomolecule, among the options given, which do not have carbon-nitrogen bonds, since nitrogen is an absent element in carbohydrates. Carbohydrates are the most abundant biomolecules in nature.

Detailed explanation-2: -Carbohydrates and fats generally do not contain nitrogen although some derivatives of these molecules also contain nitrogen sometimes.

Detailed explanation-3: -Carbohydrates and lipids are made of only carbon, hydrogen, and oxygen (CHO). Proteins are made of carbon, hydrogen, oxygen, and nitrogen (CHON).

Detailed explanation-4: -Answer and Explanation: The correct option: The carbon-nitrogen bond that connects amino acids together in a protein is referred to as the b. peptide bond. The amino acids are joined together with the help of peptide bonds, which form the protein structure in the body.

Detailed explanation-5: -Nucleic acid bonds The bonds that hold together the phosphorus, sugar, and nitrogen molecules are called glycosidic bonds and ester bonds. Glycosidic bonds are made between the first carbon atom in a 5-carbon sugar and the ninth nitrogen atom in a nitrogenous base.