B5 Flashcards
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
What does HIV cause ?
Flu like illness
When does HIV occur ?
HIV is spread by sexual contact or by the exchange of bodily fluids such as blood
How is tobacco mosaic virus spread?
By contact and vectors
What does tobacco mosaic virus cause ?
Damages leaves and reduces photosynthesis
How is tobacco mosaic virus prevented ?
Field hygiene and pest control
How is salmonella caused ?
Through undercooked food and poor hygiene .
What are some symptoms of salmonella ?
Fever , abdominal cramps , diahorea and vomiting
What is gonorrhea ?
A type of std through sex
What is a symptom of gonohrea ?
Discharge from the penis and vagina and the pain of urination .
What are treatments of gonorrhoea ?
Antibiotics , using condoms and limiting sexual partners
What type of disease is rose black spot ?
A fungal disease
What does rose black spot cause ?
Purple or black spots developing on the leaves , causing the leaves to drop early , reducing the area for them to produce photosynthesis.
What is a protist ?
A type of single celled organism that is a rare pathogen
