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Topic 6.3 defense against infectious disease assessment statements
 

Topic 6.3 defense against infectious disease assessment statements

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Topic 6.3 defense against infectious disease assessment statements for IB Biology

Topic 6.3 defense against infectious disease assessment statements for IB Biology

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    Topic 6.3 defense against infectious disease assessment statements Topic 6.3 defense against infectious disease assessment statements Document Transcript

    • IB Biology I-Shou International School Topic 6.3 Defense Against Infectious Disease 6.3.1 Define Pathogen Define pathogen: State five types of pathogens and a disease that each causes. Pathogen type Example Disease Bacteria 6.3.2 Explain why antibiotics are effective against bacteria but not against viruses. Distinguish between bacteriostatic and bacteriocidal. Bacteriostatic Bacterialcidal Antibiotics are used to kill bacteria or stop their growth. Explain why antibiotics are effective against bacteria but not against viruses. 6.3.3 Outline the role of skin and mucous membranes in defense against pathogens. Skin & mucus membranes are the first line of defense against pathogens. Outline their function. Skin is a tough barrier Hairs, e.g. nose Mucous, such as in nose, airways Acidic conditions (e.g. stomach and vagina) Lysozymes Natural organisms 6.3.4 Outline how phagocytic leucocytes ingest pathogens in the blood and in body tissues. Define phagocytosis: Describe phagocytes and their function.
    • IB Biology I-Shou International School Outline the process used by phagocytes to destroy pathogens. 6.3.5 Distinguish between antigens and antibodies. Define antigen: Define antibody: Describe antigens and antibodies. Antigens Antibodies What it is: What it is: Where it’s found: Where it’s found: Purpose: Purpose: 6.3.6 Explain antibody production. What kind of cells produce antibodies? Describe how antibodies are produced.
    • IB Biology I-Shou International School 6.3.7 Outline the effects of HIV on the immune system. Define HIV: Define AIDS: Outline the effects of the HIV virus on the following: Effect on lymphocytes Effect on antibody production Effect on health 6.3.8 Discuss the cause, transmission and social implications of AIDS. Causes Transmission Social Implications