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Enzyme Function in Digestion: Lock and Key Hypothesis

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Enzyme Function in Digestion: Lock and Key Hypothesis

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@SleekMarimba

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Questions and Answers

What is the primary function of an enzyme in digestion?

To regulate the pH of the digestive system

To synthesize new molecules from smaller ones

To absorb nutrients into the bloodstream

To break down large molecules into smaller ones (correct)

According to the lock and key hypothesis, what is the shape of an enzyme's active site?

Complementary to the substrate (correct)

Identical to the substrate

Random and variable

Larger than the substrate

What is the advantage of an enzyme's specificity in digestion?

It allows the enzyme to bind to multiple substrates

It reduces the risk of unwanted reactions (correct)

It requires more energy to catalyze the reaction

It increases the rate of reaction

What is the role of the substrate in the lock and key hypothesis?

<p>It binds to the enzyme's active site</p> Signup and view all the answers

How does an enzyme's shape contribute to its function in digestion?

<p>It determines the substrate it can bind to</p> Signup and view all the answers

Study Notes

Enzyme Function in Digestion

The lock and key hypothesis is a model used to describe the action of enzymes.
Enzymes function in digestion by recognizing and binding to specific substrates, much like a key fitting into a lock.
The unique shape of the enzyme's active site allows it to bind to specific substrates, facilitating a chemical reaction.
The binding of the substrate to the enzyme's active site positions the substrate for a chemical reaction to occur.

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Description

Explain the mechanism of enzyme function in digestion using the lock and key hypothesis, with reference to a diagram. Understand how enzymes play a crucial role in biochemical reactions.