Term
| What is the germ theory of disease? |
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Definition
| Disease is caused by germs and microorganisms. |
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Term
| What is an infectious disease and how is it spread. |
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Definition
| An inefectiouse disease is caused by pathogens and spread by physical contact, cantaminated food/water, and animals. |
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Definition
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Term
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Definition
| an organism that feeds off an other organism for its own benifit. |
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Term
| What is the first line of defense? |
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Definition
| skin, tears, sweat, salivia, and mucus. |
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Term
| What is the second line of defense? |
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Definition
| fever, interferon, white blood cells (B cells) |
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Term
| non-specific immune response |
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Definition
| responds to any pathogen (prevents pathogen from entering body) |
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Term
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Definition
respond to specific pathogens that enter the body
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Term
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Definition
| confered by transferring antibodies produced by another organism. |
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Definition
| confered by body producing its own antibody |
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Term
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Definition
| Humoral immunity is immunity involving B cells and antibodies when foreign antigens are recognized in body flueds. B cells secrete antibodies that attach to the antigen, marking for distruction. |
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Term
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Definition
| occurs when T-cells destory infected body cells. Helper T cells stimulate B and T cell formation. memory T cells remember the pathogen, and suppresor T cells turn off the immune system. |
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Term
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Definition
| Drug used to treat bacterial infections. |
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Term
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Definition
| an antigen is a protein on the surface of a cell. antigens intrude the body |
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Term
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Definition
| an antibody is a protein in the plasma. Antibodies bind to foreign antigens and determins if it needs to be attacked against. |
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Term
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Definition
| An allergy is an overreaction os the immune system to a non-harmful antigen. |
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Term
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Definition
| a disorder in which the immune system attacks itself. (results when the immune system fails to detect self from non self) |
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Term
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Definition
| particles of nucleic acid, protein, and in some cases, lipids. |
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Term
| What kind of genetic material may a virus have? |
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Definition
| DNA or RNA (both nucleic acids code for instructions to make new copies) |
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Term
| what is a lytic infection? |
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Definition
| a viral infection in which the virus' make copies and immediatly destroys the host cell. |
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Term
| What is a lysogenic infection? |
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Definition
| a viral infection in which the virus becomes part of the host DNA, replicating when the host cell relicates, and destroys the host ccell after some period of dormancy. (cell dose not lyse) |
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Term
| How are viral infections preveneted? |
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Definition
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Term
| How are viral infections treated? |
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Definition
| they are typically not treatable |
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Term
| what is HIV? What is its host and how is it spread? |
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Definition
| HIV is a virus that infects helper T cells. It is spread through body fluid exchange. |
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