Gram-Positive Cocci

Question 1

+ Aerobic
+ Non-motile
+ Found in skin of mammals
+ Can cause food spoilage

Answer 1

Micrococcus

Question 2

+ Non-motile
+ Usually in clusters
+ Facultative anaerobes; mesophilic
+ Found on skin of humans and animals and birds

Answer 2

Staphylococcus

Question 3

+ Non-motile spherical
+ Facultative anaerobes; mesophilic
+ Some are present as commensals in human respiratory tract

Answer 3

Streptococcus

Question 4

+ Non-motile
+ Facultative anaerobes; mesophilic
+ Indicator organism

Answer 4

Enterococcus

Question 5

+Non-motile
+ Facultative anaerobes
+ Mesophilic; but can grow at 10 C
+ Produce lactic acid
+ Present in raw milk and milk plants

Answer 5

Lactococcus

Question 6

+ Non-motile spherical
+ Facultative anaerobes
+ Mesophilic; some species grow at <3 C
+ Found in plants, meats, and milk
+ Heterofermentative

Answer 6

Leuconostoc

Question 7

+ Non-motile; pairs or tetrads
+ Facultative anaerobes
+ Mesophilic; some can grow at 50 C
+ Some survive pasteurization
+ Produce lactic acid; homofermentative
+ Some can spoil alcoholic beverages

Answer 7

Pediococcus

Question 8

+ Non motile, large spherical cells
+ Occur in cubical packets of 8 of more
+ Facultative anaerobes
+ In soil, plant material and animal feces
+ Spoil foods of plant origin

Answer 8

Sarcina