Multiple Choice
What information can absolute dating provide a scientist about the age of a fossil in the fossil record?
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Intro to Organic Chemistry
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In the context of organic chemistry, when does the chemical breakdown of food begin?
A
In the large intestine, with the action of gut bacteria
B
In the mouth, with the action of salivary enzymes
C
In the small intestine, with the action of bile
D
In the stomach, with the action of gastric acids
Verified step by step guidance1
Understand that the chemical breakdown of food involves the process of digestion, where complex molecules are broken down into simpler ones.
Recognize that digestion begins in the mouth, where mechanical and chemical processes start breaking down food.
Identify the role of salivary enzymes, such as amylase, which begin the chemical digestion of carbohydrates in the mouth.
Consider the other options: the stomach uses gastric acids for protein digestion, the small intestine uses bile for fat emulsification, and the large intestine involves gut bacteria for further breakdown.
Conclude that the initial chemical breakdown of food starts in the mouth with the action of salivary enzymes, making it the correct answer.
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