Where Digestive Enzymes Work

Part of Enzymes in Digestion · Section 5 of 19

DiagramUnit: OrganisationGCSE

This diagram covers Where Digestive Enzymes Work within Enzymes in Digestion for GCSE Biology. Enzyme structure and function, digestive enzymes, factors affecting enzyme activity, lock and key model, and practical investigations It is section 5 of 19 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.

Where Digestive Enzymes Work

Painted human torso with three highlighted enzyme zones: mouth (amylase breaking starch into sugars), stomach (protease breaking proteins into amino acids), small intestine (amylase + protease + lipase all active, plus painted pancreas).
Mouth Amylase Starch → Maltose Stomach Pepsin Proteins → Polypeptides pH 1.5-2.0 Liver Produces Bile Pancreas Amylase, Trypsin, Lipase Small Intestine Bile acts here Emulsifies fats pH 8.5 Trypsin works Lipase works Pancreatic amylase works pH Conditions for Digestive Enzymes: 1.5 Pepsin 7 Amylase 8.5 Trypsin 8 Lipase Each enzyme has an optimal pH range Digestive Enzymes Throughout the Digestive System

Practice questions for Enzymes in Digestion

What are enzymes?

  • A. Carbohydrates that provide energy for cells
  • B. Biological catalysts that speed up chemical reactions
  • C. Proteins that are used up during digestion
  • D. Molecules that store genetic information
1 markfoundation

Explain the effect of increasing temperature on enzyme activity.

3 marksstandard

Quick recall flashcards

What is an enzyme?
A biological catalyst that speeds up chemical reactions by lowering activation energy. Enzymes are proteins with specific 3D shapes.
What does lipase do?
Breaks down lipids (fats) into fatty acids and glycerol. Produced by pancreas, works in small intestine.

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