B5 Flashcards
(37 cards)
What is a communicable disease caused by ?
A pathogen
What are three factors that effect your health ?
Diet , stress and life situations
What can viruses in cells cause ?
They can trigger changes that can lead to cancers
What helps to destroy pathogens ?
The immune system in your body
What is a communicable disease ?
One that is spread from one person to another .
What are four examples of pathogens ?
Bacteria, viruses, protists and fungi
What two pathogens cause the most diseases ?
Bacteria and viruses
In plants what two pathogens cause the majority of communicable diseases ?
Viruses and fungi
What is bacteria ?
They are single celled organisms
What kind of foods are made from the use of bacteria ?
Yogurt and cheese
What can bacteria treat ?
Sewage and can be used in medicine
Once bacteria and viruses are in your body what happens in terms of their reproduction ?
They reproduce rapidly
How does bacteria divide ?
Binary fission
What is the process of binary fission ?
Bacteria just splitting into two
What does bad Bacteria do to your body ?
Produces toxins that effect your body and make you feel ill . Sometimes they directly damage your cells
What do viruses do to your body ?
They take over the cells in your body and live , reproduce inside them which damage and kill them
What are some common disease symptoms ?
High temperature , headache and rashes
What three ways are pathogens spread ?
Water , direct contact and air
What are five ways to prevent the spread of communicable diseases ?
- Handwashing
- Using disinfectants
- Coughing or sneezing into a handkerchief
- Isolate yourself from others
- Get vaccinated
How is the measle virus spread ?
Droplet infection
What does the measles virus do to the body ?
Causes fever and rashes
Is their a cure to the measle virus ?
No
What can people do to prevent the spread of measle virus ?
Isolation and vaccinations
