Resistant bacteria (AQA GCSE Biology): Flashcards
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14 cards from this deck
What are resistant strains?
What are resistant strains?
Bacteria that survive when antibiotics are used against them
How resistance first develops in bacteria
How resistance first develops in bacteria
Through mutations during reproduction
Why bacteria develop resistance quickly
Why bacteria develop resistance quickly
They reproduce very quickly and in large numbers
How does resistance spread through bacterial populations?
How does resistance spread through bacterial populations?
Natural selection - antibiotics kill non-resistant, resistant survive
What is multiple antibiotic resistance?
What is multiple antibiotic resistance?
Bacteria resistant to more than one antibiotic
What MRSA stands for
What MRSA stands for
Meticillin-resistant Staphylococcus aureus
What infections does S. aureus cause?
What infections does S. aureus cause?
Skin infections, chest infections, food poisoning
Why MRSA is dangerous in hospitals
Why MRSA is dangerous in hospitals
Patients have open wounds/weak immunity; standard antibiotics fail
Why we must reduce antibiotic resistance
Why we must reduce antibiotic resistance
No effective treatments may be available for new strains
When doctors should NOT prescribe antibiotics
When doctors should NOT prescribe antibiotics
For viral infections or minor bacterial infections
Why antibiotics don't work on viruses
Why antibiotics don't work on viruses
Antibiotics only work against bacteria, not viruses
Why patients must finish antibiotic courses
Why patients must finish antibiotic courses
To kill all bacteria, leaving none to develop resistance
How does agriculture increase antibiotic resistance?
How does agriculture increase antibiotic resistance?
Using antibiotics to prevent infections and increase growth
Why developing new antibiotics is difficult
Why developing new antibiotics is difficult
Expensive, takes very long time, may not keep up with resistance