Straighterline microbiology final review Test Questions
And Answers Verified 100% Correct
If the decolorizer is left on too long in the Gram-staining procedure, gram-positive organisms
will be stained __________ and gram-negative organisms will be stained __________.
Select one:
a. purple; blue
b. purple; colorless
c. purple; pink
d. pink; pink d
Which of the following is considered to be a differential staining procedure?
Select one:
a. Gram stain
b. Acid-fast stain
c. Both Gram stain and Acid-fast stain
d. Leifson's flagella stain
c
If the objective lenses of a microscope can be changed without losing focus on the specimen,
they are said to be
Select one:
a. equifocal.
b. totifocal.
c. parfocal.
d. optifocal. c
Basic dyes such as methylene blue bind to cellular molecules that are________.
,Select one:
a. hydrophobic.
b. negatively charged.
c. positively charged.
d. aromatic.
b
Acid-fast organisms such as Mycobacterium tuberculosis contain lipids constructed from
________________in their cell walls.
Select one:
a. proteins
b. carbohydrates
c. mycolic acids
d. peptidoglycan
c
Fatty acid methyl ester (FAME) analysis is particularly important in public health because in this
application, microbiologists seek to identify specific microbial pathogens in ______.
Select one:
a. food and water
b. patient samples
c. genomic analysis
d. genetic diseases a
The ancestors of modern _______________ performed the oxygenic photosynthesis
responsible for converting our anoxic planet to an oxygenated one.
Select one:
a. Crenarchaeota
, b. Proteobacteria
c. Firmicutes
d. Cyanobacteria d
The second edition of Bergey's Manual classifies bacteria ______.
Select one:
a. phylogenetically
b. phonetically
c. numerically
d. None of the choices are correct.
a
The organisms in which of the following are more closely related?
Select one:
a. Order
b. Family
c. Class
d. Phylum b
The science dealing with classification is called ______.
Select one:
a. taxonomy
b. nomenclature
c. systematics
d. identification a
The temperature at which half of the strands of a double-stranded DNA molecule have
separated from each other is called the __________ temperature.
And Answers Verified 100% Correct
If the decolorizer is left on too long in the Gram-staining procedure, gram-positive organisms
will be stained __________ and gram-negative organisms will be stained __________.
Select one:
a. purple; blue
b. purple; colorless
c. purple; pink
d. pink; pink d
Which of the following is considered to be a differential staining procedure?
Select one:
a. Gram stain
b. Acid-fast stain
c. Both Gram stain and Acid-fast stain
d. Leifson's flagella stain
c
If the objective lenses of a microscope can be changed without losing focus on the specimen,
they are said to be
Select one:
a. equifocal.
b. totifocal.
c. parfocal.
d. optifocal. c
Basic dyes such as methylene blue bind to cellular molecules that are________.
,Select one:
a. hydrophobic.
b. negatively charged.
c. positively charged.
d. aromatic.
b
Acid-fast organisms such as Mycobacterium tuberculosis contain lipids constructed from
________________in their cell walls.
Select one:
a. proteins
b. carbohydrates
c. mycolic acids
d. peptidoglycan
c
Fatty acid methyl ester (FAME) analysis is particularly important in public health because in this
application, microbiologists seek to identify specific microbial pathogens in ______.
Select one:
a. food and water
b. patient samples
c. genomic analysis
d. genetic diseases a
The ancestors of modern _______________ performed the oxygenic photosynthesis
responsible for converting our anoxic planet to an oxygenated one.
Select one:
a. Crenarchaeota
, b. Proteobacteria
c. Firmicutes
d. Cyanobacteria d
The second edition of Bergey's Manual classifies bacteria ______.
Select one:
a. phylogenetically
b. phonetically
c. numerically
d. None of the choices are correct.
a
The organisms in which of the following are more closely related?
Select one:
a. Order
b. Family
c. Class
d. Phylum b
The science dealing with classification is called ______.
Select one:
a. taxonomy
b. nomenclature
c. systematics
d. identification a
The temperature at which half of the strands of a double-stranded DNA molecule have
separated from each other is called the __________ temperature.
