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Amylase Enzyme in Carbohydrate Digestion

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Amylase Enzyme in Carbohydrate Digestion

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Questions and Answers

What is the primary function of amylase in carbohydrate digestion?

To absorb glucose into the bloodstream

To break down proteins into amino acids

To synthesize glucose from maltose

To hydrolyze alpha-1,4-glycosidic bonds in polysaccharides (correct)

Where is salivary amylase found?

Small intestine

Saliva (correct)

Digestive enzymes

Pancreatic juice

How does amylase activity change in response to high glucose levels?

It increases

It is stimulated

It is inhibited (correct)

It remains the same

What is the optimal pH range for pancreatic amylase?

7.1-8.5 Signup and view all the answers

What is the role of secretin and cholecystokinin in regulating amylase activity?

To stimulate amylase secretion Signup and view all the answers

What is the final product of amylase-mediated carbohydrate digestion?

Glucose Signup and view all the answers

Study Notes

Carbohydrate Digestion and Absorption: Amylase Enzyme

What is Amylase?

A type of enzyme that breaks down carbohydrates into simpler sugars
Found in saliva and pancreatic juice

Functions of Amylase:

Hydrolyzes alpha-1,4-glycosidic bonds in polysaccharides (starches)
Breaks down starches into maltose and dextrins

Types of Amylase:

Salivary amylase:
- Found in saliva
- Begins breaking down carbohydrates in the mouth
- Optimal pH: 6.8-7.2
Pancreatic amylase:
- Found in pancreatic juice
- Active in the small intestine
- Optimal pH: 7.1-8.5

Mechanism of Action:

Amylase binds to the substrate (starch) and cleaves the glycosidic bonds
Releases maltose and dextrins, which are then further broken down into glucose

Regulation of Amylase Activity:

pH-dependent: amylase activity is optimal at specific pH ranges
Feedback inhibition: high glucose levels inhibit amylase activity
Hormonal regulation: secretin and cholecystokinin stimulate pancreatic amylase secretion

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Description

Learn about the functions and types of amylase, its mechanism of action, and regulation of activity in breaking down carbohydrates into simpler sugars. Understand the role of salivary and pancreatic amylase in digestion. Test your knowledge on the biology of amylase enzyme.