biological molecules: carbohydrates
- Created by: Rosie Young
- Created on: 14-02-13 15:12
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- Biological molecules
- Condensation reaction
- water is released, covalent bond formed
- Hydrolysis reaction
- Water used, covalent bond broken
- biological polymers
- carbohydrates
- monosaccharides
- polysaccharides
- proteins
- amino acids
- polypeptides and proteins
- nucleic acids
- nucleotides
- DNA & RNA
- carbohydrates
- function of carbohydrates
- storage
- energy source
- structure
- a-glucose + a-glucose = maltose
- maltose then forms amylose
- amylose coils into a spring
- maltose then forms amylose
- The glycosidic bond between all glucose subunits = 1,4,-glycosidic bond
- Starch
- long straight-chained amylose molecules
- branched amylopectin
- can be broken down to glucose for respiration
- energy-storage in plants
- Glycogen
- energy-storage in animnals
- a-glucose subunits
- can be broken down for respiration
- shorter 1,4- glycosidic bonds
- more compact than starch
- starch and glycogen
- do not dissolve or affect the water potential of the cell
- can easily be broken off to provide glucose for respiration
- B- glucose
- flipped
- long, straight chains
- cellulose chains
- Cellulose
- hydrogen bonds form between the chains because of the abundance of OH groups
- form microfibrils
- form macrofibrils
- Plant Cell Wall
- strength
- allows water to pass in and out of the cell easily
- prevents the cell bursting
- Untitled
- Condensation reaction
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