Systematic Bacteriology 1

Question 1

Coccus/cocci

Answer 1

Spheres

Question 2

Bacillus/bacilli:

Answer 2

Rod shape

Question 3

Vibrio:

Answer 3

Slightly curved rod
Gram-negative

Question 4

Spirillum

Answer 4

Rigid spiral bacterium

Question 5

Spirochaete

Answer 5

Flexible spiral bacterium

Question 6

Spore

Answer 6

Defensive, inert structure
Resistant to physical and chemical challenge

Question 7

Capsule:

Answer 7

Outermost layer in bacteria
Made of polysaccharides

Question 8

What does a toxin do?

Answer 8

Promotes infection and disease by directly damaging host tissues and disabling the immune system

Question 9

Aerobic definition:

Answer 9

Grows in oxygen

Question 10

Obligate aerobes definition:

Answer 10

Requires oxygen

Question 11

Obligate anaerobes definition:

Answer 11

Killed by oxygen

Question 12

Facultative anaerobes:

Answer 12

Tolerates oxygen

Question 13

Selective media:

Answer 13

Presence of specific substances permits the growth of one organism over another

Question 14

Differential media:

Answer 14

Incorporation of chemicals produces visible changes in colonies that facilitates identification

Question 15

Metabolic profiling

Answer 15

Uses biochemical characteristics e.g. uses carbon sources

Question 16

Serological test

Answer 16

Use an antibody-antigen interaction to help identify bacteria

Question 17

Function of PCR:

Answer 17

Amplifies section of genome

Question 18

MLST

Answer 18

Sequencing of entire genome

Question 19

MALDI-TOF

Answer 19

Produces a characteristic signature based on the generation of ions from a sample