Plant cells and carbohydrates
- Created by: emma
- Created on: 15-03-14 20:16
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- Plant cells and Carbohydrates
- Structure
- Cell wall
- Large vacuole
- Golgi apparatus
- Chloroplast
- Mitochondria
- Cytoplasm
- Starch grain
- Ribosome
- SER
- RER
- Nucleus
- Chloroplast
- Granum
- Stack of thylakoid membranes
- Thylakoid
- Contains chlorophyll for photosynthesis
- Stroma
- Fluid filled matrix some photosynthesis occurs here
- Starch grains
- energy storage molecule
- DNA and ribosomes
- To make enzymes for photosynthesis
- Granum
- Cell wall
- Strong(hydrogen bonding) to resist stretching and tearing
- Permeable to most molecules
- Adjacent walls separated by lamella
- Plasmodesmata are gaps in the membrane
- Cellulose
- Long straight chains of beta glucose joined by hydrogen bonds
- Every other beta glucose rotates 180 to allow the OH groups to form glycosidic bonds
- Several chains joined together in layers by hydrogen bonds
- Hundreds of these chains form microfibrils
- Microfibrils form hydrogen bonds with other microfibrils
- Cellulose fibre
- Long straight chains of beta glucose joined by hydrogen bonds
- Starch
- Coiled so compact
- Insoluble so doesn't affect Water potential
- Large molecule so doesn't leave cell
- Amylose is unbranched
- Amylopectin branched
- Glycogen
- Shorter chains
- Highly branched
- Larger surface area
- More rapid hydrolysis
- Larger surface area
- Highly branched
- Animal starch
- Shorter chains
- Structure
- Chloroplast
- Granum
- Stack of thylakoid membranes
- Thylakoid
- Contains chlorophyll for photosynthesis
- Stroma
- Fluid filled matrix some photosynthesis occurs here
- Starch grains
- energy storage molecule
- DNA and ribosomes
- To make enzymes for photosynthesis
- Granum
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