Which of the Following Statements Is True Concerning Dark-Field Microscopy

question 16

Multiple Choice

Which of the following statements is true concerning dark-field microscopy?

• A)This type of microscopy uses specific stains to enhance the contrast of certain bacteria.
• B)The condenser does not allow light to pass directly through the specimen but directs the light to hit the specimen at an oblique angle.
• C)Dark-field microscopy allows the visualization of larger viruses.
• D)Dark-field microscopy can differentiate various difficult-to-grow organisms by using immunofluorescence.

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Definitions:

Difficulty Breathing

A sensation of not being able to draw a deep breath or experiencing shortness of breath; a symptom of various medical conditions.

Fatty Substance

A general term for organic compounds that are insoluble in water but soluble in nonpolar solvents, including fats, oils, waxes, and certain vitamins.

Alveoli

Microscopic air sacs within the lungs where the exchange of oxygen and carbon dioxide occurs.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.