Not All Parts of the Food That Humans Ingest Are

question 10

Multiple Choice

Not all parts of the food that humans ingest are used by our bodies.Fiber,consisting mostly of cellulose,for instance,is excreted without providing nutrition.Which of the following statements explains why fiber is NOT used as a nutrient in humans?

• A) The human gut is unable to break it down;thus,it cannot be absorbed across the intestinal cells' membranes.
• B) Fiber is an amino acid but not one of the essential amino acids,so we do not need to absorb it as a nutrient.
• C) The fiber content of human foods is so low that it is not worthwhile for our bodies to expend energy to extract its nutrients.
• D) The fiber is digested into such small molecules that they become nutritionally insignificant.

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Definitions:

Commander-In-Chief

The supreme leader of the armed forces within a country, often held by the president or monarch, responsible for military decision making.

Continental Army

The army raised by the Second Continental Congress in 1775, under the command of General George Washington, to fight the British in the American Revolutionary War.

George Washington

The first President of the United States, serving from 1789 to 1797, and a key figure in the nation's founding and the Revolutionary War.