Monday 8.29. preclass

Question 1

What does the first part of a scientific name indicate?

Answer 1

Genus

Question 2

What is “genus”?

Answer 2

A collection of related species

Question 3

A collection of related species is a….

Answer 3

Genus

Question 4

What does the second part of a scientific name indicate?

Answer 4

The species

Question 5

What is a “species”?

Answer 5

A group of closely related strains, the basic unit of taxonomy

Question 6

What is taxonomy?

Answer 6

the branch of science that has to do with classification

Question 7

Describe a coccus cell shape

Answer 7

Sphere that may be flattened on one end or slightly oval

Question 8

Describe a rod cell shape

Answer 8

Cylindrical cell. Different than the genus name bacillus

Question 9

What are shorter bacillus cells called?

Answer 9

Coccobacillus

Question 10

What is the plural form of coccus?

Answer 10

Cocci

Question 11

What is the plural form of rod?

Answer 11

Bacilli

Question 12

What is the plural form of vibrio?

Answer 12

Vibrios

Question 13

Describe a vibrio cell shape

Answer 13

A short, curved rod

Question 14

Describe a spirillum cell shape

Answer 14

A curved rod long enough to form spirals

Question 15

What is the plural form of spirillum

Answer 15

Spirilla

Question 16

Describe a spirochete cell shape

Answer 16

Long, spiral-shaped cell with a flexible cell wall and a unique mechanism of motility

Question 17

What is the plural form of spirochete

Answer 17

Spirochetes

Question 18

Describe a pleomorphic cell shape

Answer 18

Not an actual shape, refers to bacteria that characteristically vary in their shape

Question 19

Name three common cell arrangements

Answer 19

chains
packets
clusters

Question 20

what is the difference between a packet, a chain, and a cluster?

Answer 20

chain: cell divides into one plane
packet: cell divides in two or more planes perpendicular to one another
clusters: cell divides in several planes at random