Question

Cell wall of plants are made up of ___________.

• A. Sucrose
• B. Cellulose
• C. Glycogen
• D. Peptidoglycan

Answer 1

The correct option is B

Cellulose

The correct option is B.

Explanation of the correct option:

1. In plants, the cell wall is composed mainly of strong fibers of the carbohydrate polymer called cellulose.
2. The cell wall's primary function is to provide a framework for the cell to prevent overgrowth.
3. Cellulose fibers, structural proteins, and other polysaccharides help to maintain the shape and form of the cell.
4. The cell wall of plant cells surrounds the plasma membrane and provides tensile strength as well as resistance to mechanical and osmotic stress.
5. It also enables cells to develop turgor pressure or the pressure of cell contents against the cell wall.

Explanation of the incorrect options:

Option A:

1. Sucrose is a disaccharide consisting of one glucose and one fructose molecule.
2. As a carbohydrate, sucrose provides your body with the energy required to perform physical and mental functions.
3. It’s a naturally occurring carbohydrate found in many fruits, vegetables, and grains, but it’s also added to many processed foods, such as candy, ice cream, canned foods, and other sweetened beverages.

Option C:

1. Glycogen is a large, branched polymer of glucose that is used to store energy in animals, fungi, and bacteria.
2. In animals and humans, glycogen is found mainly in muscle and liver cells.
3. It serves as a ready source of glucose for tissues throughout the body when blood glucose levels decline.

Option D:

1. Most bacterial species have a rigid envelope surrounding their cytoplasmic membrane called peptidoglycan.
2. The biosynthesis of peptidoglycans is also an important regulator of bacterial cell division.
3. It helps protect bacterial cells from environmental stress and helps preserve cell morphology throughout their life cycle.

Final answer: Cell wall of plants are made up of cellulose.