Bacteria
One-celled microorganisms
What are the two general classifications of bacteria?
Nonpathogenic and Pathogenic
What are the
... [Show More] qualities of Nonpathogenic Bacteria?
-Do not produce disease
-Can be very beneficial
What are the qualities of Pathogenic Bacteria?
-Cause infection & disease
-Some produce toxins
-Live everywhere
-Spread easily
-Have 3 basic shapes
What is Cocci?
Round-shaped cells that appear in groups or singularly
What are the three different types of Cocci?
Staphylococci, Streptococci, and Diplococci
What are qualities of Staphylococci?
-Come in bunches
-Found in boils and are pus-forming
What are qualities of Streptococci?
-Come in long chains
-Cause strep throat and are pus-forming
What are qualities of Diplococci?
-Come in pairs
-Cause pneumonia
What is the 2nd type of Pathogenic Bacteria?
Bacilli
Qualities of Bacilli?
-Rod shaped
-Most common form of bacterial cells
What is the 3rd type of Pathogenic Bacteria?
Spirilla
Qualities of Spirilla?
-Spiral shaped
-Cause syphillis, Lyme disease, and Cholera
What are the two stages of growth that bacteria experiences?
Active and Inactive
Qualities of Active bacteria growth
-Reproduce & grow rapidly
-Require dark, damp, dirty areas
- Absorb food and grow/divide
Qualities of Inactive bacteria growth
-Conditions unfavorable, they die or become inactive
-Some form spores only destroyed by sterilization
-Conditioning good and some bacteria will become active
How does Cocci travel?
Via air and dust
What are viruses smaller than?
Bacteria
What is the cause of a virus?
Common cold, measles, hepatitis
What does a virus require?
A living host
Are viruses treatable?
No
What is Hepatitis B Virus? (HBV)
Highly infectious disease that infects the liver. Vaccine preventable
What is Human Immunodeficiency Virus (HIV)?
It is AIDS. Causes the immune system to break down. Sreads when fluids from infected individual enters the bloodstream of uninflected individual
what does Human Papilloma Virus (HPV) lead to?
Health problem such as genital warts, plantat warts, cervical changes and cervical cancer
External parasites live on or obtain nutrients from what?
A host
Qualities of parasitic fungi?
-Mold and yeast
-Produce contagious diseases (ringworm, nail fungus)
-Produce non-contagious conditions (dandruff or seborrheic dermatitis)
Qualities of Parasitic Mites?
Insects that provide contagious diseases such as head lice.
What is life transmitted by?
Contact with infected combs or brushes
Head lice is usually accompanied by head scratching, redness, or small what?
Bite marks
Head lice is easy to control with what?
Pediculleide shampoo
What is the definition of Infection?
Caused by pathogenic bacteria or viruses entering the body and multiplying to the point of interfering with the body's normal state.
What is direct transmission?
Touch or exchange of body fluids
What is indirect transmission?
Air or contact with a contaminated object
Contagious infection?
Transmitted from one person to another [Show Less]