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Biology 4.1.1 Plant/animal defenses and resposes to pathogens
Fichas del conjunto (10)
- 1Give three physical defences that plants have against pathogens-Waxy cuticle
-Cellulose cell wall
-Stomatal closure - 2How does the waxy cuticle prevent the entry of pathogens?Prevents water collecting on the surface of the leaf and that water can contain pathogens
- 3How does the cellulose cell wall prevent the entry of pathogens?Physical barrier
- 4Give two chemical defences that plants have against pathogens-Defensive proteins effect the proteins in the pathogens membrane
-Some alkaloids (eg cocaine) can inhibit protein synthesis - 5Give three defences animals have against diseases-Lysosomes in saliva
-Skin acts as a barrier
-Goblet cells produce mucus that cover epithelial cells in lungs - 6What is sebum? Where is it produced?An oily substance that prevents the growth of pathogens
Produced in skin - 7Describe the wound repair response from being cut to how new skin is formedBlood clots at wound to prevent the entry of microbes. The clot dries and forms a scab. Collagen is deposited under the scab and stem cells in the endodermis undergo mitosis to produce new skin cells
- 8What does histamine do?Causes vasodilation, making capillaries more permeable to white blood cells and proteins
- 9What do cytokines do?Attract phagocytes to the effected area. They can remove pathogens by phagocytosis
- 10What causes a fever? Why is temperature increased?Cytokines increase your body temperature because higher temperatures inhibit pathogen reproduction and the immune system works better at higher temperatures
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- El usuario ha eliminado su información de asignaturas Fichas sobre Biology 4.1.1 Plant/animal defenses and resposes to pathogens, creado por Usuario eliminado el 07/06/2019.
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- Usuario eliminado · jun 2019
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- Creado por Sam Gunnell · 2 jun 2019
- Copiado por Sam Gunnell · 7 jun 2019
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