Propionibacterium
A. produces propionic acid.
B. produces lactic acid.
C. is responsible for the holes in Swiss cheese.
D. requires aerobic environments.
E. produces propionic acid AND is responsible for the holes in Swiss cheese.
Which of the following microbes is(are) important to cheese-making?
A. lactic acid bacteria
B. Clostridium acetylbutylicum
C. Desuflovibrio
D. Propionibacterium
E.
Lactic acid bacteria AND Propionibacterium
The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to
A. the neutrality of the vaginal mucus.
B. acidity of the vagina.
C. food for the resident vaginal flora.
D. fertility of the host.
Which of the following colonize the vagina during childbearing years?
A. Streptococci
B. Clostridium
C. Lactobacilli
D. Enterobacter
E.
Clostridium AND lactobacilli
A particular characteristic of disease-causing Streptococcus is
A. catalase production.
B. beta-hemolysis.
C. lactic acid production.
D. growth at refrigerator temperatures.