= polysaccharide, found in parts of plants in form of small grains.
Large amounts occur in seeds and storage organs.
Made up of chains of a-glucose monosaccharides, linked by glycosidic bonds formed in condensation reactions.
Unbranched chain wound into tight coil that makes molecule very compact.
Main role = energy storage, suited for because:
- Insoluble - doesn't draw water into cells by ososis.
- Insolubility means it doesn't easily diffuse out of cells easily.
- Compact, can be stored in small space.
- When hydrolysed forms a-glucose which is easily transported and used in respiration.
Starch is never found in animal cells.
Similar to starch but has…