Amalyse Protease Lipase
enzyme reaction catalysed
amylase starch > sugars
protease proteins > amino acids
lipase lipids > fatty acids + glycerol
Amylase: Salivary Glands, Pancrease, Small Intestine
Protease: Stomach, Pancrease, Small Intestine
Lipase: Pancreas, Small Intestine
Enzymes and Respiration
RESPIRATION is the process of RELEASING ENERGY FROM GLUCOSE, which goes on IN EVERY CELL
Aerobic respiration is respiration using oxygen.
Energy released is used for:
- Build large molecules from smaller ones (amino acids > protein)
- Animals > allow muscles to contract
- Mammals + birds > keep body temperature steady
- Plants > build sugars, nitrates and other nutrients into amino acids > protein
Uses of Enzymes
Enzymes are used in biological detergents and washing powders.
- They are mainly protein-digesting enzymes (proteases) and fat-digesting enzymes (lipases)
Enzymes are used to change foods.
- Proteins in baby foods are pre-digested (proteases)
- Carbohydrate-digesting enzymes (carbohydrases) turn starch syrup into sugar syrup.
- Glucose syrup into fructose syrup. Fructose is much sweeter, so you can use less of it
Enzymes in Industry
Speed up reactions without the need for high temperatures and pressuers
- Specific, only catalyse the reaction you want them to
- Lower costs and saves energy
- Enzymes work for a long time
- Biodegradable > less environmental pollution
- Develop allergies
- Denatured enzymes by even a small increase in temperature
- Contamination of the enzyme with substances can affect reaction