If a Microbiology Lab Student Left the Safranin Out of the Gram

question 71

Multiple Choice

If a microbiology lab student left the safranin out of the Gram stain procedure, what would be the result?

• A) All cells would be pink.
• B) Gram-positive cells would be purple and Gram-negative cells would be colorless.
• C) Gram-positive cells would be colorless and Gram-negative cells would be pink.
• D) All cells would be purple.
• E) Gram-positive cells would be pink and Gram-negative cells would be purple.

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Definitions:

Conglomerate

A coarse-grained sedimentary rock composed of rounded fragments or clasts of pre-existing rocks bound together by a matrix of finer particles and cement.

Marine Conditions

Environmental factors pertaining to the ocean or sea, including salinity, temperature, and ecosystems.

Nonmarine Conditions

Environmental or geological conditions that occur in areas not influenced by the sea, often referring to freshwater or terrestrial habitats.

Coral Reef

Underwater ecosystems characterized by reef-building corals. These structures provide habitat for a diverse range of marine species and are important for coastal protection.