While Science Is Not Yet Able to Describe the Phenomenon

question 15

Multiple Choice

While science is not yet able to describe the phenomenon of "thinking" in physical terms,we can be certain that it is a process involving the metabolism of brain cells.With positron emission tomography (PET scan) it is possible to inject short-lived isotopes and image the regions of the brain that have the most active metabolism during various mental activities.For different mental functions,different regions and amounts of nerve cells become active.However,

• A)the cellular energy expended in "thinking" must be less than the chemical bond energy supplied in food to these brain cells.
• B)"thought" cannot be linked to cell processes because energy is not related to matter.
• C)since thoughts can occur over and over,the requirement for a continual input of energy to prevent entropy does not apply to this cell activity.
• D)"thinking" is beyond the scope of science to study.

Add fractions with different denominators.

Multiply decimal numbers by integers.

Convert fractions to decimals.

Compare decimal numbers to identify which is greater or smaller.

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Definitions:

Spanish Independence

The process through which Spain gained independence from Moorish rule in 1492 and later from Napoleonic France in the early 19th century.

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Military personnel and soldiers of the United States, often engaged in national defense and international peacekeeping missions.