Fichas
GCSE AQA Biology - Infection and Response
Fichas del conjunto (20)
- 1What are pathogens?Pathogens are microorganisms that enter the body and cause disease.
- 2What are communicable diseases?Diseases that can easily spread.
- 3Pathogens cause communicable diseases. True or False?True.
- 4_____ and _____ can both be infected by pathogens.Plants and animals.
- 5Describe bacteria.Bacteria are very small cells, which can reproduce rapidly inside your body.
- 6How do bacteria make you feel ill?They produce toxins (poisons) that damage your cells and tissues.
- 7Viruses are the same as cells. True or false?False.
- 8Viruses can ______ rapidly.Reproduce.
- 9What do viruses do?They live inside your cells and replicate themselves using the cells machinery to produce many copies of themselves. The cell will usually then burst, releasing all the new viruses.
- 10How do viruses make you feel ill?The cell damage they cause is what makes you feel ill.
- 11Protists are ________.Eukaryotes.
- 12Some protists are parasites. Describe a parasite.Parasites live on or inside other organisms and can cause them damage. They are often transferred to the organism by a vector, which doesn't get the disease itself.
- 13Describe the two different types of fungi.Some fungi are single-celled. Others have a body which is made up of hyphae (thread-like structure).
- 14What does hyphae do?Hyphae can grow and penetrate human skin and the surface of plants, causing diseases. The hyphae can produce spores, which can be spread to other plants and animals.
- 15Say three ways in which pathogens can spread.1) WATER- Some pathogens can be picked up by drinking/bathing in dirty water. E.g. CHOLERA.
2) AIR- Pathogens can be carried in the air and breathed in. E.g. INFLUENZA.
3) DIRECT CONTACT- Some pathogens can be picked up by touching contaminated surfaces, including the skin. E.g. ATHLETES FOOT. - 16Name different types of diseases.1) VIRUSES
2) FUNGI
3)PROTISTS
4)BACTERIA - 17CASE STUDY Viral diseases HIVSpread- sexual contact
Causes- flu-like symptoms
Treatment-antiretroviral drugs. Stops the virus replicating in the body.
What does it do- attacks immune cells. - 18CASE STUDY Fungal diseases Rose black spotSpread- through the environment in water or by the wind.
Causes- purple or black spots on the leaves of rose plants.
Treatment- stripping the plant of affected leaves or using fungicide.
What does it do- Means that less photosynthesis takes place, so the plant doesn't grow very well. - 19CASE STUDY Malaria ProtistSpread- Mosquitoes.
Causes- Repeating episodes of fever.
Prevented- Using insecticides and mosquito nets. - 20—
Información
- Descripción
- Infection and Response GCSE AQA Biology.
- Creado por
- Eleanor Rose
- Visitas
- 434
- Etiquetas
- Valoración