The Four Basic Chemical Elements That Hold the Two Helixes

question 64

Multiple Choice

The four basic chemical elements that hold the two helixes of DNA together are identified by these letters:

• A) A, G, P, D.
• B) A, T, C, G.
• C) G, D, B, T.
• D) G, C, Y, T.

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Definitions:

Coverslip

A very thin piece of glass or plastic used to cover specimens on a microscope slide for examination.

Opaque

Describing a material or substance that does not allow light to pass through; not transparent or translucent.

Compound Light Microscope

A microscope that uses a series of lenses to magnify objects in steps, using visible light for illumination.

High Power Objective

A microscope lens with high magnification, used for observing fine details of the specimen being studied.