Question

Which of the following is not a macromolecule?

• A. Starch
• B. Protein
• C. Sucrose
• D. Nucleic Acid

Answer 1

The correct option is C

Sucrose

The correct option is C.

The explanation for the correct option:

1. Sucrose is not a macromolecule, it is the most common disaccharide that comprises the monomers fructose and glucose.
2. A very large molecule, which is essential to biophysical procedures is known as a macromolecule.
3. Examples of macromolecules are nucleic acid and protein.
4. A long chain of monosaccharides associated with glycosidic bonds is known as a polysaccharide.

The explanation for the incorrect options:

Option A:

1. Starch is a macromolecule of a polysaccharide, which comprises thousands of glucose units.
2. In plants and various other organisms, food is stored within the body in the form of starch.

Option B:

1. Proteins are the macromolecules that perform several of the essential activities within a cell.
2. They are the macromolecules formed from the repeating units of amino acids.
3. The proteins provide structural support and perform various essential activities within a cell.

Option D:

1. Nucleic acids like DNA and RNA are the crucial classes of macromolecules found within all cells and viruses.
2. The prime function of nucleic acid is to store and express genetic information.
3. DNA is a nucleic acid, which carries information for the synthesis of proteins within the cell.
4. RNA is a nucleic acid, which takes place in the process of translation, that is, protein synthesis.

Final answer: Sucrose is not a macromolecule.