Which of the Following Methods of Measuring Cell Density Would

question 69

Multiple Choice

Which of the following methods of measuring cell density would be the best to choose when you know that you do not have a lot of bacteria present in your sample?

• A) A Petroff-Hausser chamber because you are visually counting bacteria.
• B) Spectrophotometry because it is sensitive to low bacterial numbers.
• C) Dilution plating because you will be able to count between 30-300 cells on a plate.
• D) Filtration because the number of bacteria may be concentrated on the filter prior to plating.

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Definitions:

Elevated

Refers to an increase or higher-than-normal level in medical or environmental contexts, such as elevated blood pressure or elevated terrain.

Acapella Device

A respiratory therapy tool designed to help patients clear mucus from the airways by providing vibration and resistance during exhalation.

Exhale Slowly

A breathing technique often advised to reduce stress or improve lung function, involving a controlled and gradual release of breath.

Vibrates

The act of moving back and forth rapidly in a small movement, often as a result of mechanical action or acoustic energy.