Bacteria (Leaving Cert Home Economics): Flashcards
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Practise the cards
15 cards from this deck
Bacteria definition
Bacteria definition
Single-celled microorganisms found everywhere
FATTOM acronym meaning
FATTOM acronym meaning
Food, Acidity, Time, Temperature, Oxygen, Moisture
Aerobic bacteria oxygen needs
Aerobic bacteria oxygen needs
Require oxygen to survive and grow
Anaerobic bacteria oxygen needs
Anaerobic bacteria oxygen needs
Thrive in environments without oxygen
Optimal temp. range for bacteria growth
Optimal temp. range for bacteria growth
25°C to 40°C
pH preference for most bacteria
pH preference for most bacteria
Neutral or slightly alkaline (pH around 7)
Bacterial doubling time (optimal)
Bacterial doubling time (optimal)
Every 20 minutes
Bacterial reproduction method
Bacterial reproduction method
Binary fission
Gram-positive bacteria stain colour
Gram-positive bacteria stain colour
Purple
Gram-negative bacteria stain colour
Gram-negative bacteria stain colour
Pink
Flagella function in bacteria
Flagella function in bacteria
Enable movement and swimming
Endospores definition
Endospores definition
Resistant survival structures protecting bacterial DNA
More dangerous bacterial toxin type
More dangerous bacterial toxin type
Exotoxins
Three main bacterial shapes
Three main bacterial shapes
Coccus (spherical), Bacillus (rod), Spirilla (spiral)
Bacteria role in yoghurt production
Bacteria role in yoghurt production
Ferment milk lactose to produce lactic acid