Saturday, November 5, 2011

Topic Biomolecule (Carbohydrate) Essay - Main Points!

Q) Describe the structural features of cellulose
Main points
Key idea:
What is cellulose + bonds + building blocks
· A polysaccharide made up of a chain of β glucose mol
· joined by β-1,4 glycosidic bonds
· Each cellulose chain consists of 1000 or more β glucose
· Ref to alternate glucose rotated 180o to form a straight chain
Key idea:
Organization of cellulose
· Hydroxyl (OH) gp project outward fr each cellulose chain in all direction
· Form H bonds w neighbouring chains, form microfibrils
· Ref to microfibrils bundled to form macrofibrils
Comments:
(i) Visualize the answer with the aid of a labelled diagram.
(ii) Verbalize the answer + write down the main points w/o referring to the answer (use abbreviations)
(iii) Read again within the next 24h & once more within 72h (do not spend more than 10min)
(iv) You should be able to explain the structural adaptation of cellulose to its function and compare between collagen and cellulose

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