Zusammenfassung der Ressource
1.4 Starch, Cellulose and
Glycogen
- Starch
- 1-4 and 1-6 Glycosidic bonds
- Branched
- Has many ends which can be acted upon by enzymes simultaneously
- Unbranched
- Coils to helix
- Compact for storage
- Insoluble
- Doesn't effect water potential
- Energy Storage
- a-glucose
- Easily transported
- Readily used in photosynthesis
- PLANTS
- Cellulose
- Plant cell wall
- Strong
- Straight, unbranched chains
- Run paralell
- Hydrogen bonds between chains
- STRONG
- Every other monomer rotated 180 degrees, allowing the H bonds to form between hydroxyl (OH)
groups.
- BETA GLUCOSE
- Group together to form microfibrills
- Fibrous = strong
- Glycogen
- "Animal starch"
- Insoluble
- Compact
- More branches than starch
- More enzymes to act simultaneously
- Faster hydrolysis to glucose monomers