You Have Three Strains of Mice: A, B, and C

question 35

Multiple Choice

You have three strains of mice: A, B, and C. You experimentally manipulate each strain and find that all three show increased secretion of molecule X. Now you perform a parabiosis experiment with the three combinations of these mice: AB, AC, and BC. You perform the same experimental manipulation as above on one mouse of each pair without directly affecting the other mouse and look for effects on the other mouse. You find no detectable effect on the unmanipulated partner in any of the combinations. What is the logical conclusion based on these results?

• A) The effect on molecule X is not mediated by nerves.
• B) The effect on molecule X is not mediated by hormones.
• C) The effect on molecule X was just an artifact of the first experiment.
• D) The effect on molecule X is controlled by higher integrative centers of the brain.

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Definitions:

Therapeutic Progress

The measure of improvement or recovery in an individual's mental health status as a result of treatment or therapy.

Multidimensional Perspective

An approach that considers multiple factors and their interrelations in understanding subjects such as psychology, sociology, or health.

Societal Conditions

The set of circumstances and factors which affect the way in which societies function, including economic, social, cultural, and political aspects.

Family Experiences

The range of interactions, traditions, and relationships within a family unit, shaping individuals’ development and emotional well-being.