Bacteriology

Question 1

Obligate aerobe

Answer 1

cannot live or grow in the ABSENCE of oxygen

Question 2

Facultative anaerobe

Answer 2

can live and grow BOTH in the presence of oxygen and in its absence

Question 3

Obligate anaerobe

Answer 3

cannot live or grow in the PRESENCE of oxygen

Question 4

Microaerophilic

Answer 4

requires only low levels of oxygen

Question 5

Capnophilic

Answer 5

grows best with higher CO2 concentration

Question 6

Pathogenicity

Answer 6

ability of a pathogen to produce disease

Question 7

Virulence

Answer 7

degree of pathogenicity as indicated by case fatality rates and/or ability of the organism to invade the tissues of the host

Question 8

Infective dose

Answer 8

the # of organisms required to cause infection

Question 9

Lethal dose

Answer 9

the # of organisms required to cause death

Question 10

What is most common UTI bug?

Answer 10

Escherichia coli

Question 11

Syphilis is mainly diagnosed by:

Answer 11

Serologic testing

Question 12

6 gram-positive bugs that cause disease in humans: 2 cocci, 4 bacilli

Answer 12

1. Streptococcus
2. Staphylococcus
3. Bacillus
4. Clostridium
5. Corynebacterium
6. Listeria

Question 13

Which is the only gram negative cocci?

Answer 13

Neisseria (diplococcus)

Question 14

Which is the only gram-negative spirochete?

Answer 14

Treponema pallidum

Question 15

Acid-fast bacterium?

Answer 15

Mycobacterium

Question 16

Bacteria with no cell wall?

Answer 16

Mycoplasm

Question 17

Spore forming bacteria?

Answer 17

Gram positive rods only:
Bacillus
Clostridium