HUMAN NUTRITION

NUTRITION

CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which best describes the importance of the carbohydrate cellulose to plant cells?
A
It lubricates cell organelles.
B
It provides enzymes for the cell.
C
It serves as a storage center for water and wastes.
D
It provides the main structural elements in the cell wall.
Explanation: 

Detailed explanation-1: -The cellulose molecules provide tensile strength to the primary cell wall. Each molecule consists of a linear chain of at least 500 glucose residues that are covalently linked to one another to form a ribbonlike structure, which is stabilized by hydrogen bonds within the chain (Figure 19-70).

Detailed explanation-2: -The most important structural component of plant cell walls is cellulose. Cellulose is a carbohydrate found in the cell wall of plants. The carbohydrate is a polysaccharide structure.

Detailed explanation-3: -Cellulose is the primary structural component responsible for much of the mechanical strength of the cell wall. The distribution and orientation of cellulose microfibrils within the cell wall contribute to the control of cell growth.

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