Biology B1
- Created by: flyingfrog99
- Created on: 12-03-14 16:23
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- B1.1-2
- Pathogens and Disease
- Pathogens are small micro organisms that can get into the body and produce toxins that make us feel ill
- Before viruses were discovered a doctor called Ignaz Semmelweiz realised that infections could be transferred from person to person in a hospital
- Defence Mechanisms- Antibodies lock onto Antigens and then pathogens are ingested and destroyed by white blood cells
- MRSA is a super bug as it resists strains of antibiotics
- Coordination and Control
- Reflex Arc: Receptor-Sensory Neuron-Relay Neuron-Effector-Action. Synapses are junctions between Neurons
- Hormones and The Menstrual Cycle
- FSH is made by the pituitary gland and it causes the egg to mature and Oestrogen to be produced
- Oestrogen made by the Ovaries, stops the production of FSH. And stimulates both the linning of the womb to recieve the egg, and stimulates LH to be produced. LH
- The Plant Hormone known as an Auxin is responsible for phototropism and gravitropism
- Pathogens and Disease
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