Topic 4 - Emerging Resistance Flashcards
What defines bacteria as resistant?
Bacteria are labelled resistant when they are not killed by antibiotics which previously were used as cures against them.
How do bacteria reproduce?
Bacteria reproduce at a fast rate.
What can mutations during bacterial reproduction result in?
Mutations can result in new genes, such as the gene for antibiotic resistance.
What is the result of exposure to antibiotics on bacteria?
Exposure to antibiotics creates a selection pressure, allowing those with antibiotic resistant genes to survive.
What happens to bacteria that do not have antibiotic resistance genes?
Bacteria without antibiotic resistance genes die.
What is the consequence of antibiotic-resistant bacteria reproducing?
The presence of antibiotic-resistant bacteria increases as they can reproduce and pass on advantageous genes.
How does the emergence of antibiotic-resistant bacteria relate to natural selection?
The emergence of antibiotic-resistant bacteria supports Darwin’s theory of natural selection.
What is a consequence of the population increase of antibiotic-resistant bacteria?
Bacterial diseases spread rapidly because people are not immune to these new resistant bacteria.
What is MRSA commonly referred to as?
MRSA is commonly referred to as a ‘superbug.’
Why is MRSA called a ‘superbug’?
MRSA is resistant to many different types of antibiotics.
Where is MRSA commonly found?
MRSA is common in hospitals.
How does MRSA spread in hospitals?
MRSA spreads when doctors and nurses move to different patients.
Fill in the blank: Bacterial diseases spread rapidly because people are not immune to these new _______.
[resistant bacteria]
