Physical digestion refers to the process of breaking down food into smaller pieces without altering its chemical structure. This process begins in the mouth where food is chewed into smaller pieces, and continues in the stomach where food is churned and mixed with gastric juices.

On the other hand, chemical digestion involves breaking down food into simpler nutrients that can be used by the cells. This process involves enzymes and other substances that break down large molecules of food into smaller molecules. For example, in the mouth, salivary amylase breaks down starch into maltose. In the stomach, pepsin breaks down proteins into peptides.

In summary, physical digestion involves mechanical processes that break down food into smaller pieces, while chemical digestion involves enzymatic reactions that break down food into simpler nutrients.

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Physical digestion refers to the process of breaking down food into smaller pieces without altering its chemical structure. This process begins in the mouth where food is chewed into smaller pieces, and continues in the stomach where food is churned and mixed with gastric juices.

On the other hand, chemical digestion involves breaking down food into simpler nutrients that can be used by the cells. This process involves enzymes and other substances that break down large molecules of food into smaller molecules. For example, in the mouth, salivary amylase breaks down starch into maltose. In the stomach, pepsin breaks down proteins into peptides.

In summary, physical digestion involves mechanical processes that break down food into smaller pieces, while chemical digestion involves enzymatic reactions that break down food into simpler nutrients.

Knowee AI · Accepted Answer

Physical digestion refers to the process of breaking down food into smaller pieces without altering its chemical structure. This process begins in the mouth where food is chewed into smaller pieces, and continues in the stomach where food is churned and mixed with gastric juices.

On the other hand, chemical digestion involves breaking down food into simpler nutrients that can be used by the cells. This process involves enzymes and other substances that break down large molecules of food into smaller molecules. For example, in the mouth, salivary amylase breaks down starch into maltose. In the stomach, pepsin breaks down proteins into peptides.

In summary, physical digestion involves mechanical processes that break down food into smaller pieces, while chemical digestion involves enzymatic reactions that break down food into simpler nutrients.

Explain the difference between physical and chemical digestion.

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