Diseases Flashcards
What are living things that cause disease called?
Pathogens
Pathogens include bacteria, viruses, fungi, and parasites.
What is a parasite?
Any living thing that lives on or in the body of another living thing
The living thing that a parasite infects is called the host.
What is the role of the host in relation to a parasite?
The living thing that a parasite infects
Hosts provide the environment for parasites to grow and reproduce.
What are bacteria?
Very small living things that can only be seen using a microscope
Bacteria cause diseases such as cholera and pneumonia.
Are all bacteria harmful?
No
Some bacteria are beneficial and play important roles in processes like digestion.
How do viruses compare in size to bacteria?
Viruses are even smaller than bacteria
All viruses are harmful and cause diseases.
What diseases are caused by viruses?
Flu, chicken pox, and measles
Some viruses can also infect bacteria.
What type of organism is yeast?
Fungus
Yeast is used to make bread rise.
What are some examples of fungi?
- Mushrooms
- Yeast
- Ringworm
- Athlete’s foot
- Rusts in plants
Some fungi are beneficial, while others are parasites that cause diseases.
What diseases are caused by fungi?
Ringworm, athlete’s foot, and rusts in plants
These fungi can infect humans, animals, and plants.
What are two diseases caused by parasites?
- Malaria
- Dysentery
These diseases are caused by various types of parasites.
Name 4 body defenses against diseases
Tears- contain a chemical substance that kill bacteria
Mucus- traps germs
Skin - acts as a barrier to the body
Acid in the stomach
Name 5 ways we can practice good hygiene to prevent diseases
Wash hands with soap
Wash hands after handling animals
Wash hands raw fruit/veg
Drink safe water
Cover your nose and mouth when sneezing
