Fighting disease - drugs Flashcards
How can bacteria become resistant to antibiotics
They can mutate meaning they develop a resistance and when an infection occurs, some of the bacteria that is resistant will not be harmed and the non-resistant bacteria will die leaving only the resistant bacteria to reproduce, increasing the population of the resistant bacteria
How can we slow down the rate at which resistance develops
Doctors can avoid over prescribing antibiotics
What do painkillers do
Reduce the symptoms of pain
What do antibiotics do
Kill/prevent growth of bacteria without killing your own body cells
What temperature is best for growing microorganisms in the lab at school
and why
25
because harmful pathogens aren’t likely to grow at this temperature
Why is it important to treat symptoms with the right antibiotic
Different antibiotics kill different types of bacteria
How do viruses reproduce
Using your own body cells
Why is it difficult to produce drugs to kill viruses
Since they reproduce using your own body cells, it makes it hard to kill a virus without killing your own cells
What is growing microorganisms in a lab a test for
The actions of antibiotics and disinfectants
Where are microorganisms grown
Culture mediums
What is an example of a culture medium
Agar jelly
What are 2 safety precautions in the growing microorganisms
All equipment is sterilised before use to prevent the unwanted growth of bacteria and to not kill bacteria or affect the experiment
Tape a lid onto petri dish to stop microorganisms in the air contaminating it
Explain growing bacteria in the lab
- Hot agar jelly poured into Petri dish
- When jelly is cool, inoculating loops are used to transfer microbes to the Petri dish
- Microorganisms multiply
- Paper discs are soaked in different types of antibiotics and placed on jelly
- Resistant bacteria will grow around, non-resistant will die
