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Diseases that can be passed from one individual to another are called ___________.
transmissible diseases
A microorganism that can potentially cause disease is called a __________.
pathogen
The organism that is infected by the pathogen is called the ________.
host
When you keep things clean, that means you are practicing good __________.
hygiene
Chemicals produced by white blood cells to attack and destroy pathogens are called the __________.
antibodies
The process in which white blood cell engulfs and surrounds the pathogen and then breaks it down is called __________.
phagocytosis
__________ is the introduction of the harmless version of pathogens into our body to improve the response of our immune system.
Vaccination
_______ that lines the respiratory tracts contains lysozymes that kill pathogens.
Mucus
Our skin is a type of ___________ barrier that protects us from pathogens.
mechanical
Animals that help to transfer pathogens from one host to another are called _______.
vectors
Name 2 chemical barriers that protect us from infection.
Mucus in the respiratory tract (containing lysozymes) and stomach acid that kill pathogens.
Give one example of direct method of transmission of disease.
body fluids during sexual intercourse, blood exchange(shared needles, blood transfusion, accidents...etc)
Human immunodeficiency virus(HIV) causes a transmissible disease in humans. Identify the host and the pathogen.
host - human, pathogen - HIV
Name 4 groups of organisms that include pathogens.
Bacteria, virus, fungi, protoctists
