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A2 Cause of death
| Question | Answer |
|---|---|
| The bacterium that causes TB | Mycobacterium tuberculosis |
| The virus that causes AIDS | HIV HUMAN IMMUNODEFICIENCY VIRUS |
| The polysaccharide that forms the cell wall of bacteria | PEPTIDOGLYCAN |
| A structure used to propel the bacterium | FLAGELLUM |
| Part of the bacterial cell membrane that is infolded, the site of cellular respiration | MESOSOME |
| Protein tubes that hold bacteria to surfaces | PILI |
| A small circular piece of DNA | PLASMID |
| The layer of slime around a bacterium | CAPSULE |
| A non- cellular particle that contains nucleic acid inside a protein coat | VIRUS |
| The outside layer of a virus that has come from the host cell membrane | ENVELOPE |
| DNA and RNA are collectively called; | NUCLEIC ACIDS |
| The splitting of a host cell to release viral particles | LYSIS |
| Bacteria or viruses that cause disease | PATHOGENS |
| Three diseases caused by viruses | Cold, flu, mumps, polio, chickenpox, german measles, AIDS |
| Three diseases caused by bacteria | Cholera, typhoid, gonorrhoea, Salmonella food poisoning, TB |
| Three ways that HIV can be transmitted | Sharing needles, unprotected sex, direct blood to blood transfer, from mum to baby through placenta, breast milk or at birth |
| An enzyme present in tears and saliva | LYSOZYME |
| Released from damaged white blood cells, causes inflammation | HISTAMINE |
| Retention of excess tissue fluid and so swelling | OEDEMA |
| Two types of white blood cells that are phagocytes | NEUTROPHILS AND MACROPHAGES |
| White blood cells that are involved in the specific immune reaction | LYMPHOCYTES |
| Dead white cells and bacteria | PUS |
| Areas of the lymphatic system where lymphocytes and macrophages wait for pathogens | LYMPH NODES |
| A chemical released from cells infected with viruses that is a non specific defence for other cells | INTERFERON |
| Substances, (usually proteins)present on cell membranes that identify the cell as 'self' | ANTIGENS |
| Chemicals that label pathogen antigens as non self, and thus alert phagocytes | ANTIBODIES |
| Lymphocytes that mature in the thymus | T LYMPHOCYTES |
| A macrophage with foreign antigens on its membrane | APC ANTIGEN PRESENTING CELL |
| The special receptors on a T-helper cell that allow APC binding | CD4 RECEPTORS |
Created by:
carolannaston
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