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Question
Biology
Posted 7 months ago
Explain the role of enzymes in food digestion in the human body.
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Answer from Sia
Posted 7 months ago
Answer
Enzymes play a crucial role in breaking down food into smaller molecules that can be absorbed and utilized by the body.
Solution
a
Specificity : Enzymes are specific to substrates, meaning each type of enzyme only reacts with certain substances. In digestion, different enzymes break down specific types of food components: amylases for carbohydrates, proteases for proteins, and lipases for fats
b
Catalysis : Enzymes speed up the chemical reactions involved in breaking down food molecules without being consumed in the process. This catalytic action allows for efficient digestion within the short time food remains in the digestive system
c
Optimal conditions : Enzymes in the human digestive system work best at body temperature (around 37°C) and specific pH levels, which vary throughout the digestive tract to suit the enzymes active in each section. For example, pepsin requires a highly acidic pH, which is provided by the stomach
Key Concept
Enzymes are biological catalysts that speed up the digestion of food.
Explanation
Enzymes reduce the activation energy required for digestion, allowing nutrients to be broken down efficiently into absorbable forms. Each enzyme works under optimal conditions and is specific to certain substrates.

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