LIFE SCIENCE

Detailed explanation-1: -Carbohydrates are the most common type of organic compound. A carbohydrate is an organic compound such as sugar or starch, and is used to store energy. Like most organic compounds, carbohydrates are built of small, repeating units that form bonds with each other to make a larger molecule.

Detailed explanation-2: -All carbohydrates consist of carbon, hydrogen, and oxygen atoms and are polyhydroxy aldehydes or ketones or are compounds that can be broken down to form such compounds. Examples of carbohydrates include starch, fiber, the sweet-tasting compounds called sugars, and structural materials such as cellulose.

Detailed explanation-3: -Glucose and starch are different forms of carbohydrates. Glucose is a monosaccharide or the simplest carbohydrate and starch is a polysaccharide or a complex carbohydrate. Glucose is a six-carbon monosaccharide (hexose) containing an aldehyde group. They cannot be hydrolyzed further into simpler forms.

Detailed explanation-4: -Sucrose, glucose and starch are related because they’re all forms of carbohydrate. One of the essential macronutrients in foods along with protein and fat, carbohydrates supply energy to your body.

Detailed explanation-5: -Hence, option (D) is correct. Starch, glucose, galactose, and cellulose are examples of carbohydrates.