Week 2 - Bacterial Growth & Metabolism
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13 Terms
4 Phases of Bacterial Growth
Lag - adapt + metabolically active + no division
Exponential - rapid division
Stationary - no of new cells = no of dying cells
Death - waste build up + nutrient depletion
Oxygen Bacteria Types
Obligate aerobes
Microaerophiles
Facultative anaerobes
Obligate anaerobes
Carboxyphiles
Grow best in high CO2 conc
Temp Bacteria Types
Psychrophiles <15
Mesophiles 37
Thermophiles 50-55
pH Bacteria Types
Acidophiles
Alkalophiles
Neutrophiles
Selective Media
Allow certain bacteria to grow & inhibit others
Differential Media
Allow diff bacteria to be distinguished
Respiration
Aerobic
High ATP + CO2 + H2O
Krebs Cycle
8 reactions
Pyruvic acid consumed
2 ATP produced
CO2 produced
Electron Transport Chain
Redox reactions
32-24 ATP
H2O produced
Fermentation
Anaerobic
Low ATP
Organic waste - acids/alcohols
Stages of Infectious Disease
Incubation - colonisation + symptoms
Prodromal - increase number + mild symptoms
Invasive - highest numbers + severe symptoms
Decline - immune response/treatment + decrease symptoms
Convalescence - recovery
TAMPON
Temp
Atmosphere
Moisture
pH
Osmolarity
Nutrients
