A Shift in Quality Control Results on a Levy-Jennings Chart

question 40

Multiple Choice

A shift in quality control results on a Levy-Jennings chart indicates:

• A) possible instrument malfunction.
• B) gradual deterioration of reagents.
• C) the need to replace an instrument light source.
• D) both A and B

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Definitions:

Biological Species Concept

A definition of species whereby individuals are considered to belong to the same species if they are capable of interbreeding and producing fertile offspring.

Bacteria

Microscopic, single-celled organisms that can be found in a variety of environments; some are beneficial while others can cause diseases in humans, animals, and plants.

Background Extinction

The continuous, low-level extinction of species that has occurred throughout much of the history of life. Compare with mass extinction.

Continuous

A term used to describe a non-interrupted or unbroken series, sequence, or progression.