Because Smokers Vary in the Number of Puffs Per Cigarette

question 24

Multiple Choice

Because smokers vary in the number of puffs per cigarette, time between puffs, depth of inhalation, and how much of the cigarette is smoked, it would be ___________ to use an aggregate measure of the total number of cigarettes smoked as an index.

• A)important
• B)preferable
• C)unadvisable
• D)appropriate

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Definitions:

Regulatory Mutations

Genetic mutations that affect the regulation of gene expression, potentially leading to changes in the timing, location, and amount of gene product being produced.

Adaptation

The process by which an organism becomes better suited to its environment, often through changes in its traits.

Promiscuous Enzyme

An enzyme that is capable of acting on a broad range of substrates, displaying functional versatility.