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Enzymes (Role (Catabolism (Carbohydrates, Lipids, Proteins, i.e. glucose…
Enzymes
Role
Metabolism
All reactions in biotic organism
Lower activation energy
Speed up reactions
Catabolism
Carbohydrates
Lipids
Proteins
i.e. glucose lysis to pyruvate
Anabolism
i.e. synthesising glucose
Metabolic pathway
Linked chemical reactions
Biological catalyst
Chemical composition
Primarily enzymes are proteins
Chains of amino acids; polypeptides
Linked by peptide bonds
High molecular weight
Active site
Amino acids
Oxygen
Carbon
Hydrogen
Nitrogen
Environmental factors
Increase temperature
Deactivate
Denature
Change in pH
Deactivate
Denature
Change in substrate concentration
Saturation
Primary data
Pepsin eggwhite prac
Model
Induced fit model
Lock and key
Enzyme-substrate complex
Examples
Pepsin
ph: 1.5 to 1.6
Temp: 37°C
Substrate: protein in eggwhite
Breakdown of proteins
Peptides
Catalase in yeast
pH: 6 to 8
Temp: 37°C
Substrate: hydrogen peroxide
Decomposition of hydogen peroxide
Water
Oxygen
Glucase in yeast
pH: 4 to 6
Temp: 37°C
Substrate: glucose
Converts starch to glucose