B2 - Organisation PART 1
created 3/12/17
- Created by: amphibology
- Created on: 03-12-17 19:11
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- Muscular
- Moves what it's attached to
- Contracts (shortens)
- Glandular
- Secretes chemicals
- Enzymes & hormones
- Epithelial
- Covers parts of the body
- stomach TISSUES
- Made of tissues
- Muscular
- Moves stomach wall
- Churns up food
- Muscular
- Moves stomach wall
- Churns up food
- Churns up food
- Moves stomach wall
- Muscular
- Churns up food
- Moves stomach wall
- Glandular
- Digestive juices
- Digest food
- Glandular
- Digestive juices
- Digest food
- Digest food
- Digestive juices
- Glandular
- Digest food
- Digestive juices
- Epithelial
- Covers stomach
- Inside + outside
- Organs
- Digestive system
- breaks down + absorbs food
- Digestive system
- Glands
- Digestive juices
- Pancreas
- Salivary glands
- Stomach
- Small intestine
- Digest food
- Liver
- Produces bile
- Small intestine
- Absorbs SOLUBLE molecules
- Large intestine
- Absorbs WATER
- from insoluble molecules
- Enzymes
- Biological catalysts
- Reduce need for high temp.
- Speed up useful chemical reactions
- Don't get used up/changed
- Large proteins
- Made from CHAIN of amino acids
- Active site specific to SUBSTRATE
- Substance involved in the reaction
- Necessary for reaction to be catalysed
- "lock-and-key"
- Simpler model than 'induced fit'
- Active site changes shape for tighter fit
- Simpler model than 'induced fit'
- optimum p.h.: usually 7
- pepsin: 2, stomach
- optimum temp: 45C
- Amylase
- Starch -> Maltose
- Blue/black
- Iodine
- 1 drop; each well of spotting tile
- B. burner, tripod/gauze
- Beaker of water, 35C
- thermometer
- Beaker of water, 35C
- 1cm(3) of amylase sol. & 1cm(3) of buffer sol.
- syringe, ph 5
- Beaker of water, 35C
- thermometer
- Test tube holder: into beaker. 5 mins.
- 5cm(3) starch solution
- Different syringe
- 5cm(3) starch solution
- Mix contents, stopclock
- Take new sample from boiling tube
- Continuous sampling
- 30s, dropping pipette
- Iodine should remain brown/orange
- Vary buffer solution ph
- Rate of reaction (s(-1)): 1000/time
- AMYLASE
- Starch -> Maltose
- Salivary gland
- Small intestine
- Pancreas
- PROTEASE
- Proteins -> Amino Acids
- Stomach (pepsin)
- Small intestine
- Pancreas
- LIPASE
- Lipids -> Glycerol & Fatty Acids
- Pancreas
- Small intestine
- BILE
- Neutralises HCl in small intestine (enzymes)
- Produced in liver
- Stored in gall bladder
- Released into small intestine
- Emulsifier
- Breaks fat into small droplets
- Larger S.A. for enzymes (lipase)
- Breaks fat into small droplets
- Salivary glands - amylase
- Gullet - oesophagus
- Stomach
- Pummels w/ muscular walls
- Pepsin - protease
- HCl
- Kills bacteria
- ph2: protease enzyme
- Pummels w/ muscular walls
- Stomach
- Gullet - oesophagus
- Liver - produces bile
- Gall bladder -stores bile
- Amylase
- Protease
- Small intestine
- Produces enzymes
- Digestive food absorbed into blood
- Large intestine
- Absorbs excess water
- Rectum
- Insoluble waste
- Pestle + mortar
- Beaker, distillated water
- Glass rod
- Filter paper
- Benedict's - reducing sugars
- 5cm(3) of food solution
- 75C water bath
- Pipette, 10 drops B. sol.
- Test tube holder, 5m, away from you
- Pipette, 10 drops B. sol.
- 75C water bath
- Biscuits, cereal, bread
- 5cm(3) of food solution
- Blue -> green, yellow, brick-red
- Iodine - starch
- 5cm(3) food, few drops of I
- Shake
- 5cm(3) food, few drops of I
- Brown/orange -> (blue/)black
- Biuret - proteins
- Meat, cheese
- Iodine - starch
- 5cm(3) food, few drops of I
- Shake
- 5cm(3) food, few drops of I
- Iodine - starch
- Meat, cheese
- 2cm(3) each
- Blue -> pink/purple
- Pasta, rice, potatoes
- Sudan III - lipids
- 5cm(3), doesn't need filtering
- 3 drops
- Gentle shake
- 3 drops
- 2 layers, one bright red
- Milk
- 5cm(3), doesn't need filtering
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