Multiple Choice
What type of macromolecule does pepsin primarily digest in the stomach?
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23. The Digestive System
Introduction to the Digestive System
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Which of the following best describes ingestion in the digestive system?
A
The process of taking food into the mouth
B
The absorption of nutrients into the bloodstream
C
The elimination of waste products from the body
D
The breakdown of food into smaller molecules
Verified step by step guidance1
Begin by understanding the term 'ingestion' within the context of the digestive system. Ingestion refers to the initial step in the digestive process.
Recognize that ingestion specifically involves the act of taking food into the mouth. This is the first physical interaction between food and the digestive system.
Differentiate ingestion from other digestive processes such as absorption, which involves nutrients entering the bloodstream, and elimination, which is the removal of waste products.
Consider the breakdown of food into smaller molecules, which is a separate process known as digestion, occurring after ingestion.
Conclude that ingestion is best described as the process of taking food into the mouth, marking the beginning of the digestive journey.
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