BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Threose is a four-carbon monosaccharide with molecular formula C4H8O4. It has a terminal aldehyde group rather than a ketone in its linear chain, and so is considered part of the aldose family of monosaccharides.

Detailed explanation-2: -Erythrose is a tetrose saccharide with the chemical formula C4H8O4. It has one aldehyde group, and is thus part of the aldose family. The natural isomer is D-erythrose; it is a diastereomer of D-threose.

Detailed explanation-3: -Carbohydrates in foods include all sugars (sucrose [table sugar], glucose, fructose, lactose, maltose) and starches (found in pasta, bread, and grains).

Detailed explanation-4: -What are carbohydrates? Carbohydrates are found in a wide array of both healthy and unhealthy foods-bread, beans, milk, popcorn, potatoes, cookies, spaghetti, soft drinks, corn, and cherry pie. They also come in a variety of forms. The most common and abundant forms are sugars, fibers, and starches.