Pathogens (Unit 3) - Flashcards
Commonly called a germ
Pathogen
What Is a Pathogen?
A disease-causing organism
What Is a Disease?
A change in the normal way a body
functions that causes harm to the
body
______ are the changes in
our bodies that occur when we
get a disease
Symptoms
Example of symptoms:
sneezing, runny nose - symptoms of a cold
Diseases are classified into 2
groups based on their causes:
if they can be spread from person
to person or not
A disease that can spread from person to
person. Also called infectious disease or
contagious disease
Communicable Diseases
_________ always caused by exposure to pathogens, leading to pathogens entering, reproducing in and infecting your body
communicable disease
Example of communicable disease
rubella
for communicable disease Most pathogens are:
bacteria, viruses, fungi, or protists
ARE ALL EXAMPLES OF?
COVID-19
Rabies
HIV
Tuberculosis
Measles
Chickenpox
Communicable Diseases
People may be born with the disease
Non-Communicable Diseases
refers to the way the body of an organism works
Physiology
Any disease that can not be spread
from one person to another
Non-Communicable Diseases
example of non-communicable disease:
sickle-cell anemia
is the structure of organisms
Anatomy
the origination and development of a disease
Pathogenesis
Or disease may develop as the person
ages example:
(example: heart disease)
Bacteria:
Most belong to the Kingdom _______
Eubacteria.
the study of the spread, control, and prevention of
disease in a group of persons
Epidemiology:
A few bacteria belong to Kingdom ________. These are usually found in _________ (e.g. gut of animals, swamps, salt lakes,
hot springs)
Archaebacteria
extreme environments
Bacteria are Are extremely _____; range in size from 0.2 -1 µm
Some stick together in small groups called _______
small
colonies
Endospores can be killed by exposing them to pressurized steam at 121 degrees Celsius for 10-15 minutes in a process called ______ in a machine called an _______
sterilization
autoclave
Bacteria can be classified by shape:
Bacillus (plural: bacilli) -
rod-shaped