IB Biology Topic B1.1.6 Structure of Cellulose Revision Notes (SL/HL)

IB Biology Topic B1.1.6 Structure of Cellulose Revision Notes (SL/HL) | RevisionDojo

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Molecular Structure of Cellulose

Polysaccharide Framework
1. Cellulose is a polymer of β-glucose monomers linked by β-1,4-glycosidic bonds.
2. This alternating orientation (rotation of each subsequent glucose by 180°) yields straight, unbranched chains.
β-1,4-Glycosidic Bonds
1. The hydroxyl (-OH) on carbon 1 of one glucose is above the ring plane, and on carbon 4 of the next glucose it is below.
2. This arrangement forms long, linear cellulose chains rather than the coiled or branched structures seen in starch or glycogen.
Hydrogen Bonding
1. Each cellulose chain exposes -OH groups at regular intervals.
2. Adjacent chains form hydrogen bonds, creating microfibrils.

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Molecular Structure of Cellulose

Polysaccharide Framework
1. Cellulose is a polymer of β-glucose monomers linked by β-1,4-glycosidic bonds.
2. This alternating orientation (rotation of each subsequent glucose by 180°) yields straight, unbranched chains.
β-1,4-Glycosidic Bonds
1. The hydroxyl (-OH) on carbon 1 of one glucose is above the ring plane, and on carbon 4 of the next glucose it is below.
2. This arrangement forms long, linear cellulose chains rather than the coiled or branched structures seen in starch or glycogen.
Hydrogen Bonding
1. Each cellulose chain exposes -OH groups at regular intervals.
2. Adjacent chains form hydrogen bonds, creating microfibrils.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic B1.1.6: Structure of Cellulose Notes

Molecular Structure of Cellulose

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Molecular Structure of Cellulose

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A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics