Which of the Following Statements Supports the Hypothesis That the Bidirectional

question 29

Multiple Choice

Which of the following statements supports the hypothesis that the bidirectional gas flow occurring in humans (air goes in and out through the same passages) is less efficient than the unidirectional flow in fish?

• A)Bidirectional flow in humans does not take advantage of countercurrent exchange.
• B)About one-third of the air in human lungs is trapped in "dead space" where gas exchange with the circulation cannot occur.
• C)Neither "bidirectional flow in humans does not take advantage of countercurrent exchange" nor "about one-third of the air in human lungs is trapped in 'dead space' where gas exchange with the circulation cannot occur" is true.
• D)Bidirectional flow in humans does not take advantage of countercurrent exchange;about one-third of the air in human lungs is trapped in "dead space" where gas exchange with the circulation cannot occur.

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Definitions:

Demographics

Statistical data relating to specific populations, including information on age, gender, income, education level, and ethnicity, among other variables.

Psychographics

The study and classification of people according to their attitudes, aspirations, and other psychological criteria, often used in marketing to understand consumer behavior.

VALS System

Stands for Values, Attitudes, and Lifestyles system; it is a proprietary research methodology used for psychographic market segmentation and research.

VALS Typology

A classification system that segments consumers based on their values, attitudes, and lifestyles to predict behavior.