Which of the Following Methods of Measuring Cell Density Cannot

question 25

Multiple Choice

Which of the following methods of measuring cell density cannot distinguish between living and dead bacterial cells and thus may not provide the data needed in an actual infection or contamination? (Select all that apply)

• A) Spectrophotometry
• B) A Petroff-Hausser chamber
• C) Dilution Plating
• D) Filtration

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Definitions:

Protons

Particles with a positive charge found in the nucleus of an atom, playing a role in the atom's mass and total charge.

Neutrons

Subatomic particles found in the nucleus of an atom, with no electric charge and a mass slightly larger than that of protons.

Solvent

A substance that dissolves a solute, resulting in a solution; usually a liquid but can also be a solid or gas.

Water

A clear, flavorless, scentless, and almost invisible chemical compound that primarily makes up the waters of Earth's rivers, lakes, and seas.