Chapter 1- Cells Flashcards
Microbiology
Study of small living things
Bacteria
One celled organisms
Classifications of bacteria
Non pathogenic
Pathogenic
Non pathogenic bacteria
Do not produce disease
Can be very beneficial
70% bacteria is non
Surface of skin
Pathogenic bacteria
Cause infection, disease, toxins
Lives everywhere
Contagious
Cocci
Round shaped Bacteria that appear in groups or singularly
Staph
Bunches
Found in boils
Strep
Long chains
Strep throat
Diplococci
Pairs
Pneumonia
Bacilli
Rod
Most common form
Spirilla
Spiral
Syphillis, Lyme disease
Stages of growth cycle
Active and inactive
Active growth
Reproduce and grow rapidly
Like damp dark areas with food
Inactive growth
Conditions unfavorable - they die or become inactive
Some form pores only destroyed by sterilization
Conditions good - some become active
How to cocci travel
Through air and dust
How to bacilli and spirilla travel
Use flagella and cilia to propel themselves through liquids
Viruses
- Cause
- Require
- Treatment
- Smaller than…
Cause - common cold , measles, hepatitis
Requires - living host
Treatment - not treatable with antibiotics. Vaccinations can prevent
Smaller than bacteria
Hepatitis B Virus (HBV)
Blood borne pathogen that causes highly infectious disease to liver
Human immunodeficiency virus (HIV)
Leads to AIDS
causes immune system to break down
Spreads when fluids from infected individual enter bloodstream
Human papilloma virus (HIV)
Virus can lead to genital and plantar worts, cervical changes and cancer
External parasites
Live on or obtain nutrients from a host
Parasitic Fungi
Mold and yeast
Produce contagious diseases (ringworm, nail fungus)
Non contagious disease (dandruff)
Parasitic Mites
Insects that produce contagious diseases such as itch mites and head lice
