Disease And Bioenergetics Flashcards
What is health?
Health is a state of physical and mental wellbeing
What factors may have a profound effect on health?
Diet
Stress
Life situations
Age
What are communicable diseases caused by?
Pathogens
What are pathogens?
Microorganisms that cause disease
Name four pathogens
Bacteria, viruses, fungi, protists
How do bacteria make us feel ill?
They produce toxins that make someone feel ill
How do viruses make us feel ill?
Viruses live and reproduce in body cells, causing cell damage that makes someone feel ill
How can pathogens be spread?
Direct contact
Airborne
Water
What is a vector?
Vectors are organisms that carry disease
What are the ways that we can prevent disease?
Hygiene
Destroying vectors
Isolation
Vaccination
How an we use uncontaminated cultures of microorganisms?
For investigating the action of disinfectants and antibiotics
What maximum tempurature should cultures be incubated in and why?
25 degrees celcius in schools and colleges to reduce the likelihood of pathos growing that might be harmful to humans
How can you investigate the effects of disinfectants and antibiotics on bacterial growth?
Using agar plates and calculating the cross-sectional area of colonies grown or of clear areas of agar
How is measles spread and what does it cause?
Measles virus is spread by droplet infection(air) it causes fever and rash and can be fatal. There is no cure. Isolation and vaccinations prevent spread
Explain late stage HIV/AIDS
Late stage HIV infection or AIDS occurs when the body’s immune system becomes so badly damaged it can no longer deal with other infections or cancers
How is HIV spread?
Sexual contact or exchange of bodily fluids, such as blood (direct contact)
