Diseases Caused by Viruses and Bacteria Flashcards
Define Pathogen
Disease producing agent
From point of microorganism, disease is nothing more than a…
conflict of lifestyles
Disease occurs when…
the infection causes HARM to the HOST
Small pox, polio, measles, AIDS, mumps, influenza etc are an example of..
VIRUSES (caused of human disease)
What happens when the virus REPRODUCES?
destroys the CELLS that it infects causing symptoms of the disease
What is the ONLY successful protection against most viral diseases?
HOW?
to parent the infection
by stimulating the immune system through vaccines
Define Interferon
small proteins that are produced by the body’s cells when the cells are infected by viruses
What happens when interferon gets release from the virus-infected cells?
make it more difficult for the virus to infect other cells
Define Oncogenic virus
cancer causing viruses
How many bacteria in the world actually produces disease
very FEW
Who was Louis Pasteur
first person to show that bacteria did cause disease
Examples of disease caused by Pathogenic bacteria include:
- Diphtheria
- Tuberculosis
- Typhoid
- Fever
- Hansen Disease
- Syphilis
- Cholera
- Bubonic Plague
What are 2 ways bacteria caused diseases:
- Damage cells & tissues of infected organism directly by breaking down its living cells to use for food (direct)
- Release toxins (poison) that travel throughout the body, interfering with normal activity of host (indirect)
Define Antibiotics
Drugs, natural compounds that can attack & destroy bacteria
Define Sterilization
Process that destroys living bacteria by subjecting them either to great heat or to chem action
most bacteria can be killed in boiling water
