Biological Molecules
- Created by: abileigh.allen
- Created on: 23-01-20 11:40
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- Biological Molecules
- Proteins
- Bonding
- Hydrogen
- Peptide
- Disulphide - cysteine groups
- Hydrophobic and hydrophilic reactions
- ionic - NH3 and CO2H
- Structure
- folding into secondary, tertiary and quaternary
- Globular
- Insuliin
- Hormone - blood glucose concentration
- Soluble in water - transport
- Specific shape to fit into receptors
- Insuliin
- Fibrous
- Collagen
- 3 pp chains bound together
- Mesh - resistant to tearing, in skin
- Elastin
- Made of multiple tropoelastin - cross links hold together
- Gives strength and elasticity
- Collagen
- Conjugated
- Haemoglobin
- Quaternary prosthetic protein
- Oxygen bonds to the haem groups
- Haemoglobin
- Bonding
- Ions
- Cations +ve
- Examples - functions
- Anions -ve
- Examples - functions
- Cations +ve
- Carbohydrates
- Reducing / non-reducing sugars test
- iodine test
- Bonds / reactions - examples of mono, di, and poly
- Condensation - makes bonds
- Hydrolysis - breaks bonds
- Starch - alpha glucose
- Energy store in plants
- Amylose - helical, C1-C4
- Amylopectin - branched, C1-C6 bonds, hydrolysed quicker
- Glycogen - alpha glucose
- Branched - free ends so easy top add / use glucose
- Short term energy store
- Cellulose - beta glucose
- Straight chain - molecules inverted
- Cell wall
- fibres - microfibrils
- Lipids
- Phospholipids PO4 (3-)
- Bilayer - between aqueous environments
- Saturated / unsaturated
- Triglycerides
- Saturated / unsaturated
- Function
- Roles of lipids
- Electrical Insulation
- Waterproofing
- Hormone production
- Fat stores - long term
- Emulsion test
- Bonds - reactions to make and break
- Hydrolysis - breaks the bonds
- Esterification - makes the bonds
- Properties
- Immiscible - need an emulsifier
- Health Advice
- Could be other factors
- Changing scientific knowledge
- Phospholipids PO4 (3-)
- Water
- Properties - how they make it a stable environment
- SHC
- Surface Tension
- Density of ice
- Solvent
- Cohesion
- Bonds
- Hydroxyl groups - slightly polar
- Oxygen - slightly -ve
- Hydrogen - slightly +ve
- Properties - how they make it a stable environment
- Proteins
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