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Cbse class 12 biology chapter 8 human health and disease. Has the ability to repair itself, to fight off attacking microorganisms and adapt to a variety of situations. Pathogens responsible for transmissible diseases can be spread either through direct contact, eg. They may be caused by i a single gene mutation alkaptonuria, phenylketonuria, albinism, sicklecell anaemia, haemophilia, colour. Infections and infectious diseases are a great burden on many societies, including the countries in the who european region. Biology class 12 unit 8 human health and disease revision. These interfaces include the digestive and gasexchange systems.
The important notes of biology for human health and disease pdf. The chemical which supress the immunity response to antigen partially or completely. Human health and disease cbse notes for class 12 biology ncert solutions maths physics chemistry biology science health, common diseases in human and immunity. Disease can result from pathogenic microorganisms penetrating any of an organisms interfaces with the environment. Cbse class 12 biology chapter 8 notes pdf download is available here. Class 12 biology chapter 8 human health and disease notes pdf download.
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Introduction may 30, 2008 diet jun 01, 2008 gaseous exchange may 31, 2008 smoking and disease may 31, 2008 infectious diseases june 01, 2008 immunity may 31, 2008. The malaria parasite is spread from person to person by mosquitoes. Human health and disease chapter 9 strategies for enhancement in food production chapter 10 microbes in human welfare biology is the youngest of the formalised disciplines of natural science. Deoxygenated blood enters through the vena cava into the right atrium.
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