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Science 24 C Disease & Human Health
various terms from Science Connect 2 Textbook
33
Science
11th Grade
03/27/2014

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Term
pasturization
Definition
the process by which a food is heated to kill the microbes that make it spoil
Term
microbes
Definition
micro-organisms
Term
pathogens
Definition
disease causing agents such as viruses, bacteria, fungi and protists
Term
bacteria
Definition
microscopic one-celled organism, may be beneficial, harmful or neither
Term
virus
Definition
microscopic non-cellular disease-causing agent
Term
fungi
Definition
organisms that live off dead and decaying organisms or are parasitic on living organisms
Term
protist
Definition
single-celled organisms that share some characteristics with both plants and animals; some cause serious diseases
Term
communicable disease
Definition
illness that can be spread from one organism to another
Term
botulism
Definition
form of food poisoning caused by bacteria
Term
salmonellosis
Definition
form of food poisoning caused by bacteria
Term
staph bacteria
Definition
staphylococcus bacteria, cause of food poisoning
Term
sterilization
Definition
process that uses steam to destroy bacteria
Term
aseptic
Definition
free of pathogens
Term
pandemic
Definition
disease prevalent throughout entire country or continent or whole world (more than an epidemic)
Term
epidemic
Definition
mamy people in a certain region acquire a disease quickly (not as widespread as a pandemic)
Term
endemic
Definition
a given disease is found to a lesser extent in a particular region
Term
Quarantine
Definition
places where people are isolated to prevent the spread of an illness
Term
public health
Definition
government and agencies working together to maintain community health
Term
vaccination
Definition
injecting an antigen from a particular disease into the body in order to act as a catalyst for the body to begin producing antibodies
Term
antibodies
Definition
protein compounds released by white blood cells to react with and destroy antigens
Term
physical defences
Definition
the body's physical barriers against pathogens. This includes the skin and mucus.
Term
inflammatory response
Definition
Tissue swelling and increased blood flow; the body's second line of defense against further damage when the skin is breached
Term
immune system
Definition
the body's third line of defense against disease; targets specific pathogens
Term
macrophages
Definition
specialized white blood cells of the immune system that surround and destroy damaged cells, foreign proteins and pathogens
Term
antigens
Definition
structures attached to all cells that help the body's immune system identify pathogens
Term
inherited immunity
Definition
resistance to disease that is passed on genetically
Term
acquired immunity
Definition
immunity to pathogens that is developed throughout life through exposure or vaccination
Term
active immunity
Definition
the body's process of developing antibodies against certain diseases
Term
passive immunity
Definition
antibodies introduced into the body to create immunity
Term
vaccine
Definition
an antigen injected into the body as a catalyst for the body to begin producing antibodies of its own
Term
immunization
Definition
catalyst for the body to begin producing antibodies
Term
over-the-counter drugs
Definition
Medication sold without a doctor's prescription
Term
antibiotic
Definition
drug that fights bacterial infections by either killing bacteria or preventing them from reproducing.
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