BIOD 171 MICROBIOLOGY PORTAGE LEARNING COMPLETE EXAM PREP NOTES AND MOCK QUESTIONS

BIOD 171 MICROBIOLOGY PORTAGE LEARNING
COMPLETE EXAM PREP NOTES AND MOCK
QUESTIONS

◉ Pathogenicity.
Answer: ability of a microorganism to cause disease


◉ Virulence.
Answer: ability to produce disease


◉ 5 steps to infection.
Answer: 1. enter the host
2. adhere to host tissues
3. invade tissues and obtain nutrients
4. replicate while warding off immune defenses
5. transmit to a new host


◉ direct contact transmission.
Answer: direct contact between source of pathogen and host


◉ indirect contact transmission.

,Answer: no direct contact between source of pathogen and host


◉ direct contact transmission example.
Answer: - person to person (saliva, touching, sex)
- animal (bite, touching)
- environment (swimming, soil)
- vertical (in utero, vaginal delivery, breast milk)


◉ indirect contact transmission example.
Answer: - Airborne (respiratory aerosois, windburn, stirred up
animal droppings)
- Vehicle (food borne, contaminated needles, contaminated water)
- Vector (biological -- mosquito bite, tick bite, flea bite)
- Vector (mechanical -- flies, cockroaches)


◉ what is the gram status of Streptococcus.
Answer: gram positive


◉ what is the gram status of staphylococcus.
Answer: gram postive


◉ what is the gram status of mycobacterium (tuberculosis).

, Answer: weakly positive


◉ what is the gram status of clostridium.
Answer: gram positive


◉ what is the gram status of legionnaires.
Answer: gram negative


◉ what is the gram status of plague.
Answer: gram negative


◉ what is the gram status of anthrax.
Answer: gram positive


◉ what is the gram status of lyme disease.
Answer: gram negative


◉ what is the gram status of the 3 STI's.
Answer: gram negative


◉ What is the motility of streptococcus?.
Answer: non-motile