Bacteriology: Shapes, Features, Names and Types

Question 1

What names do we use when talking about bacteria?

Answer 1

genus and species

Question 2

What bacteria has both an inner and outer membrane?

Answer 2

gram -

Question 3

In which phase in bacterial growth does sporulation begin?

Answer 3

stationary phase

Question 4

What is a virulence factor?

Answer 4

anything that allows for bacteria to grow/colonize in a particular place

ex: motility of bacteria to move through mucus layer to be able to colonize

Question 5

Rather than size, what does bacteria differentiate between other organisms?

Answer 5

lacking organelles (including nucleus)

• also contains peptidoglycan

Question 6

What’s a strain of bacteria?

Answer 6

anytime you isolate a colony of species of bacteria

Question 7

What is the shape of cocci?

Answer 7

circular/spherical

Question 8

What is a cluster of cocci?

Answer 8

staphylococci

Question 9

What is a chain of cocci?

Answer 9

streptococci

Question 10

What is a curved rod called?

Answer 10

vibrio

Question 11

What is the primary characteristic of classification of bacteria?

Answer 11

gram stain

Question 12

What color is gram - and gram +?

Answer 12

gram - is pink
gram + is purple

Question 13

If forgot to put ethanol stem in a gram stain, what would happen?

Answer 13

everything would be purple because ethanol is the decolorizer

Question 14

What is serology?

Answer 14

Surface antigen tests to check the level for specific antibodies

Question 15

What is PCR?

Answer 15

DNA sequencing

Question 16

What is the best way to compare bacteria by using what specific region?

Answer 16

DNA sequencing the 16S ribosome rRNA

Question 17

What does it mean if bacteria is 97% the same in the 16S ribosome RNA?

Answer 17

same species

Question 18

If in the same strain, do you have to use the 16S ribosome RNA?

Answer 18

no, can use group of sequence

Question 19

What is the classification system for organisms in order?

Answer 19

Domain, Kingdom, Phylum, Class, Order Family, Genus, Species

Question 20

What do we care about for the classification of bacteria?

Answer 20

Genus and Species