B1.1 - Keeping Healthy Flashcards
When does a person become malnourished
If their diet is not balanced
What is metabolic rate?
The rate at which all chemical reactions in the cells of the body are carried out
Can metabolic rate be affected by inherited factors?
Yes
Name one inherited factor that affects our health
Cholesterol level
What was Semmelweis’ theory?
He said to reduce the risk of infection you need to maintain personal hygiene and to keep hospitals clean. He realised the importance of cleanliness in hospitals.
What do bacteria and viruses produce when reproducing rapidly inside the body?
Poisons ( toxins )
How do white blood cells help to defend us against pathogens?
1) ingesting them
2) producing antibodies
3) producing antitoxins, which counteract toxins
Do painkillers kill pathogens?
No
Name a strain of bacteria that has become resistant to antibiotics?
MRSA
How can we prevent further resistance to antibiotics arising?
Avoid over-use of antibiotics
What causes pathogens to produce new strains?
Mutations
Are antibiotics used to treat non-serious infections? And why?
No, so that the rate of development of resistant strains is slowed down
What is a vaccination?
It contains a small quantity of dead or inactive form of the pathogen into the body which stimulates white blood cells to produce antibodies that destroy the pathogen
What must you do to Petri dishes and culture medias before you use them to kill unwanted microorganisms?
It must be sterilised
What is used to transfer microorganisms to culture medias?
An inoculating loop
