Chamberlain College of Nursing: BIOS 242 Microbiology Week 2 Quiz / BIOS242 Microbiology Week 2 Quiz (2 NEW Versions)
BIOS 242 Microbiology Week 2 Quiz
... [Show More] / BIOS242 Microbiology Week 2 Quiz (2 NEW Versions): Chamberlain College of Nursing
BIOS 242 Quiz 2/ BIOS242 Quiz 2 (2 NEW Versions): Microbiology: Chamberlain College of Nursing
Question 1
(TCO 3) Cellular organelles and viruses are generally measured in _____.
Correct!
nanometers
millimeters
micrometers
centimeters
decimeters
Chapter 4: Microscopy, Staining, and Classification
Question 2
(TCO 3) Why does immersion oil improve resolution?
It allows light to travel at a uniform speed on its way to the lens.
It decreases the working distance.
It increases the numerical aperture.rect!
It increases numerical aperture and maintains a uniform light speed.
It increases the angle of refraction of the light.
Chapter 4: Microscopy, Staining, and Classification
Question 3
(TCO 3) A patient with tuberculosis could be diagnosed by use of the _____ stain.
Gram
endospore
acid-fast
flagellar
capsule
Chapter 4: Microscopy, Staining, and Classification
Question 4
(TCO 3) The rules of naming organisms are called _____.
taxonomyrrect!
nomenclature
classification
binomials
identification
Chapter 4: Microscopy, Staining, and Classification
Question 5
(TCO 3) Which of the following statements about transmission electron microscopy is false?
Thin segments must be used.
Electrons are the source of illumination.
Correct!
Glass lenses are used.
The sample is placed in a vacuum.
Stains can be applied to improve contrast.
Chapter 4: Microscopy, Staining, and Classification
Question 6
(TCO 4) A cell that uses an organic carbon source and obtains energy from light would be called a _____.
photoheterotroph
lithoautotroph
photoautotroph
chemoheterotroph
chemoautotroph
Chapter 6: Microbial Growth and Nutrition
Question 7
(TCO 4) Human pathogens are classified as _____.
thermoduric
thermophilesCorrect!
mesophiles
hyperthermophiles
psychrophiles
Chapter 6: Microbial Growth and Nutrition
Question 8
(TCO 4) Organisms that can grow with or without oxygen present are _____.
obligate aerobes
facultative anaerobes
aerotolerant anaerobes
obligate anaerobesorrect!
either facultative anaerobes or aerotolerant anaerobes
Chapter 6: Microbial Growth and Nutrition
Question 9
(TCO 4) The use of salt and sugar in preserving various types of foods is an application of which of the following concepts?
Nitrogen fixationCorrect!
Osmotic pressure
pH
Hydrostatic pressure
Quorum sensing
Chapter 6: Microbial Growth and Nutrition
Question 10
(TCO 4) During the _____ of growth, new cells are being produced at the same rate as other cells are dying.
lag phase
log phase
death phase
stationary phase
intermediate phase
Chapter 6: Microbial Growth and Nutrition
Question 11
8 / 10 pts
(TCO 4) Compare and contrast the streak-plate method of isolation with the pour-plate method of isolation.
BIOS 242 WEEK 2 QUIZ
uestion 1
(TCO 3) Which of the following is a magnifying lens?
Objective
Ocular
Condenser
Dark-field stop
Correct!
Both the objective and the ocular
Chapter 4: Microscopy, Staining, and Classification
Question 2
(TCO 3) The microscope preferred for viewing living specimens is the _____ microscope.
You Answered
bright-field
Correct Answer
phase-contrast
scanning electron
scanning tunneling
transmission electron
Chapter 4: Microscopy, Staining, and Classification
Question 3
(TCO 3) If a microbiology lab technician left the safranin out of the Gram stain procedure, what would be the result?
All cells would be purple.
Correct!
Gram-positive cells would be purple, and Gram-negative cells would be colorless.
All cells would be pink.
Gram-positive cells would be pink, and Gram-negative cells would be purple.
Gram-positive cells would be colorless, and Gram-negative cells would be pink.
Chapter 4: Microscopy, Staining, and Classification
Question 4
(TCO 3) The rules of naming organisms are called _____.
taxonomy
Correct!
nomenclature
classification
binomials
identification
Chapter 4: Microscopy, Staining, and Classification
Question 5
(TCO 3) All of the following are associated with smear preparation except _____.
Correct!
agglutination of the specimen
spreading the specimen onto a slide
fixation using heat
killing the microbes in the specimen
fixation using methanol or formalin
Chapter 4: Microscopy, Staining, and Classification
Question 6
(TCO 4) A(n) _____ organism is one that requires oxygen for growth.
You Answered
anaerobic
facultative anaerobic
aerotolerant
Correct Answer
obligate aerobic
Both aerotolerant and anaerobic
Chapter 6: Microbial Growth and Nutrition
Question 7
(TCO 4) A microbe that grows only at the bottom of a tube of thioglycollate medium is probably a(n) _____.
obligate aerobe
facultative anaerobe
aerotolerant anaerobe
microaerophile
Correct!
obligate anaerobe
Chapter 6: Microbial Growth and Nutrition
Question 8
(TCO 4) A fastidious organism might be grown on which of the following types of media?
Transport media
Reducing media
Correct!
Enriched media
Differential media
Selective media
Chapter 6: Microbial Growth and Nutrition
Question 9
(TCO 4) Another term for the logarithmic growth of bacterial cells is _____.
generation time
Correct!
exponential growth
arithmetic growth
absorbance
binary fission
Chapter 6: Microbial Growth and Nutrition
Question 10
(TCO 4) _____ are complex communities of various types of microbes that adhere to surfaces.
Aggregates
Colonies
Isolates
Correct!
Biofilms
Media
Chapter 6: Microbial Growth and Nutrition
Question 11
10 / 10 pts
(TCO 4) Explain how temperature and pH levels can influence microbial infections in the human body. [Show Less]