How Might a Psychoneuroimmunologist Explain the Increased Risk of Catching

question 73

Multiple Choice

How might a psychoneuroimmunologist explain the increased risk of catching the common cold during periods of prolonged stress?

• A) Stress increases the number of natural killer cells, which attack the immune system.
• B) Stress increases the number of white blood cells, making the body more susceptible to infection.
• C) Telomeres are lengthened by stress, leaving cells more vulnerable to infection.
• D) Stress disrupts normal chemical communication between the brain and the immune system.

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Definitions:

Carbon Dioxide

Carbon dioxide is a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.

Phosphoglyceraldehyde (PGAL)

A three-carbon sugar molecule involved in the Calvin cycle of photosynthesis and also in glycolysis, a key step in cellular respiration.

Sugar Production

The process of extracting or synthesizing sugar from various sources for consumption.

Engelmann's Experiment

An experiment by Theodor Engelmann using a prism and algae to demonstrate the wavelength of light that photosynthesis is most efficient.