When Eukaryotic Cells Are Stained with DNA-Specific Dyes and Viewed

question 4

Multiple Choice

When eukaryotic cells are stained with DNA-specific dyes and viewed under the light microscope, DNA molecules are revealed in

• A)the nucleus.
• B)the matrix of the mitochondrion.
• C)the stroma of chloroplasts.
• D)all these places: nucleus, mitochondrion, and chloroplast.

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Definitions:

Signal Transduction

The process by which a chemical or physical signal is transmitted through a cell as a series of molecular events, leading to a cellular response.

Semicircular Canals

Three fluid-filled tubes in the inner ear that play a key role in maintaining balance and detecting head movement.

Bony Labyrinth

A complex system of channels and cavities within the temporal bone of the skull, part of the inner ear structure.

Ampullae

Small bulbous expansions of fluid-filled tubes, particularly in the sensory systems of certain animals, like the lateral line system of fish or the balance organs of the inner ear in vertebrates.