Which of the Following Is the Best Description of a Control

question 15

Multiple Choice

Which of the following is the best description of a control for an experiment?

• A) The control group is kept in an unchanging environment.
• B) The control group is left alone by the experimenters.
• C) The control group is matched with the experimental group except for one experimental variable.
• D) The control group is exposed to only one variable rather than several.
• E) Only the experimental group is tested or measured.

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Definitions:

Smoker's Lung

A condition characterized by respiratory complications and reduced lung function resulting from long-term exposure to tobacco smoke.

DNA Transcribes

The process by which DNA is used as a template to produce messenger RNA (mRNA), initiating protein synthesis.

RNA

Ribonucleic acid, a nucleic acid present in all living cells, playing a role in protein synthesis and the transmission of genetic information.

Polypeptide

An organic linear polymer comprised of numerous amino-acid residues linked in a sequence, which constitutes a portion of or an entire protein molecule.