Enzyme Structure and Function

Part of Enzymes in Digestion · Section 2 of 19

DiagramUnit: OrganisationGCSE

This diagram covers Enzyme Structure and Function 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 2 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.

Enzyme Structure and Function

Show legacy SVG diagram Enzyme Active Site Substrate 1. Substrate approaches 2. Enzyme-Substrate Complex Perfect fit at active site 3. Products formed Substrate broken down 4. Products released Enzyme unchanged Lock and Key Model of Enzyme Action The enzyme's active site has a complementary shape to the substrate

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

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Enzyme Models: Lock and Key

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