BIOD 171 MODULE 5 ESSENTIAL
MICROBIOLOGY ACTUAL TEST BANK
QUESTIONS SOLUTIONS GRADED A PLUS
PREMIUM STUDY RESOURCE
●● List at least 3 observations a researcher would be sure to note while
assessing an unknown microbial sample.
Answer: size and shape, motility, gram status, color change, chemical
reactions
●● While observing an unknown sample of limited amounts, a
researcher must determine motility and Gram status using the same
sample. What would you determine first and why?
Answer: Motility would be determined before gram status because
motility is easily observed on a wet mount. The sample would need to be
killed through heat fixing in order to determine gram status
●● A Facultative anaerobe is a microorganism capable of growth under
what conditions?
Answer: A microorganism capable of growth under aerobic and
anaerobic conditions
●● As streptococcus is catalase negative would it thrive or die in the
presence of peroxides? Why?
, Answer: It would die in the presence of peroxides because it is unable to
breakdown peroxides
●● streptococcus is most often streaked onto:
Answer: blood agar
●● True or False: the Lancefield groups are used to subdivide antigenic
groups of alpha-hemolytic Streptococcus
Answer: False
●● True or False: the Lancefield groups are used to subdivide antigenic
groups of gamma-hemolytic Streptococcus
Answer: false
●● Greater than 90% of all human streptococcal infections belong to
(multiple choice)
Answer: group A
●● The distinctions for Lancefield subgroupings lie in its: (select all that
apply)
Answer: Carbohydrate composition of antigens
●● left untreated, strep throat can progress to___, which displays ___
hemolytic activity.
MICROBIOLOGY ACTUAL TEST BANK
QUESTIONS SOLUTIONS GRADED A PLUS
PREMIUM STUDY RESOURCE
●● List at least 3 observations a researcher would be sure to note while
assessing an unknown microbial sample.
Answer: size and shape, motility, gram status, color change, chemical
reactions
●● While observing an unknown sample of limited amounts, a
researcher must determine motility and Gram status using the same
sample. What would you determine first and why?
Answer: Motility would be determined before gram status because
motility is easily observed on a wet mount. The sample would need to be
killed through heat fixing in order to determine gram status
●● A Facultative anaerobe is a microorganism capable of growth under
what conditions?
Answer: A microorganism capable of growth under aerobic and
anaerobic conditions
●● As streptococcus is catalase negative would it thrive or die in the
presence of peroxides? Why?
, Answer: It would die in the presence of peroxides because it is unable to
breakdown peroxides
●● streptococcus is most often streaked onto:
Answer: blood agar
●● True or False: the Lancefield groups are used to subdivide antigenic
groups of alpha-hemolytic Streptococcus
Answer: False
●● True or False: the Lancefield groups are used to subdivide antigenic
groups of gamma-hemolytic Streptococcus
Answer: false
●● Greater than 90% of all human streptococcal infections belong to
(multiple choice)
Answer: group A
●● The distinctions for Lancefield subgroupings lie in its: (select all that
apply)
Answer: Carbohydrate composition of antigens
●● left untreated, strep throat can progress to___, which displays ___
hemolytic activity.
