BIOLOGY
MONOSACCHARIDES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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large numbers of many weak hydrogen bonds are strong.
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joined chains of beta glucose form microfibrils
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many weak hydrogen bonds joins chains of beta glucose
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long straight chains of beta glucose
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microfibrils provide strength to the cell wall.
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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: -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.
Detailed explanation-3: -Soon new cellulose microfibrils are deposited on the wall adjacent to the microtubules and oriented parallel to them. As the wall thickens, the shape of the cell shifts from cylindrical to kidney-like.
Detailed explanation-4: -Plant cell walls are primarily made of cellulose, which is the most abundant macromolecule on Earth.