Biology Topic 3
- Created by: em3fr
- Created on: 18-03-19 20:55
View mindmap
- Biology T3
- Communicable disease
- Bacteria - small living cells - make you feel ill by releasing toxins
- Viruses are not cells, they are much smaller. They damage cells
- Protists - single celled Eukaryotes. Some are parasites
- Fungi - grow and penetrate skin
- Pathogens spread in air, water and direct contact
- Viral, protist + fungal disease
- Viral diseases
- Measles - viral disease spread by direct contact. Cause fever and rash
- Tobacco mosaic virus (TMV) in plants. Causes discolouration affecting photosynthesis
- HIV - spread by sexual contact, attacks immune system
- Fungal disease
- Rose black spot forms yellow spots on plants, causing decrease in photosynthesis
- Protist disease
- malaria is caused by a protist and causes fever
- Viral diseases
- Bacterial disease
- Salmonella is a bacterial disease caused by toxins in undercooked food.
- Gonorrhoea is passed on during sexual activities
- Fighting disease
- Your immune system attacks pathogens
- White blood cells engulf pathogens and digests them and form antibodies and antitoxins
- Your immune system attacks pathogens
- Drugs
- Some drugs relieve symptoms and others cure the problem
- Bacteria can become resistant to antibodies so when treating and killing them, you have to carry on or they will duplicate
- Monoclonal antibodies
- Made from a type of white blood cell - B-lymphocytes
- They only target one type of of antigen
- Made from a type of white blood cell - B-lymphocytes
- Plant diseases and defences
- If a plant has a disease they usually have stunted growth or spots of the leaves
- Communicable disease
Comments
No comments have yet been made