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Types of pathogens

Unit 3&4 VCE Biology

TermDefinition
incubation period time period between infection and the first appearance of any symptoms of the disease
virus non-cellular pathogen that is composed of nucleic acid (DNA or RNA) surrounded by a protein coat, cannot reproduce unless inside a host cell
vector disease carrying organism, eg mosquito carrying malaria
antigen compound that can trigger an immune response
MHC I protein marker found on all cells except red blood cells that mark the cell as self or non-self and can present self or non-self antigens
pathogen disease causing agent
non-cellular pathogen disease causing agent that is not categorised as being made of cells, for example: virus, prion
fungi cellular pathogen that produces spores, for example yeast
self-antigens displayed on MHC markers and recognised as self (normal proteins produced by the cell/organism)
prion non-cellular pathogen composed only of protein
allergic response occurs when the immune system reacts to a substance (allergen) that is usually harmless - a hypersensitivity
bacteriophage non-cellular pathogen: virus that infects bacteria
infectious disease disease caused by an organism (mostly a micro-organism) that can be transmitted from one person to another
cellular pathogen disease causing agent that is categorised as being made up of cells for example: bacteria, fungi
autoimmune response occurs when the immune system fails to recognise 'self' antigens & cells and begins to attack its own cells, example: multiple sclerosis
bacteria cellular pathogen that is susceptible to treatment by antibiotics
MCH II protein marker found on antigen presenting cells, used to present antigen to other immune cells
parasite cellular pathogen that lives on/on another organism and causes harm to the organism
allergen usually harmless substance that causes a hypersensitivity allergic reaction in some people
protist cellular pathogen: unicellular, eukaryotic, belongs to protist kingdom, for example - malaria
virulence degree to which an organism can cause disease
Created by: BiologyBright
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