Year 7 Microbes Flashcards
What does a fungi contain?
Cell wall, vacuole, starch granule, cytoplasm, nucleus, cell membrane
Give three examples of bacteria
E.g. Food poisoning, sore throats, tuberculosis, tetanus, cholera, typhoid, bacterial meningitis
What does a bacterium contain?
Cell wall, cell membrane, cytoplasm, loop of DNA, flagella
What does a virus contain?
Protein coat, strand of DNA
Why is a virus classified as non-living?
It cannot reproduce without a host
What is an agar plate?
A nutrient rich jelly for micro-organisms to grow
Give three examples of viruses
E.g. Influenza, mumps, chickenpox, smallpox, polio, rabies, viral meningitis
Name the places microbes can enter the body
Eyes, ears, nose, mouth, genitals, cuts
Name three ways microbes can spread
E.g. Airborne droplets, food and water, animals
Why can microbes be useful?
They can be grown
Give a use of a microbe
Bacteria can be used in milk to make it ‘go off’ or to turn it into yoghurt
What is the formula for aerobic respiration in yeast?
Glucose + oxygen —> carbon dioxide + water
Give three examples of fungi
Fungal sinusitis, athlete’s foot, onychomycosis
What is a parasite?
Something living on or in something else
How does a white blood cell kill a bacterium for the first time?
- It recognises it and moves towards it
- It engulfs it by fusing its cell membrane around it
- It produces toxic enzymes and harmful chemicals that enter the compartment and destroy and break down the bacterium
- The white blood cell will absorb only useful material and expel the rest