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MODEL

Temperature and pH

Explore how conditions alter an illustrative enzyme profile.

Model

81.2% relative activity

Temperature affects collision rates and protein stability. pH changes charges that support active-site structure and binding.

0255075100Relative activity (%)020406080Temperature (°C)

Illustrative curve, with a chosen temperature optimum of 40°C; real enzymes differ. Resetting a slider recalculates a fresh sample: this model does not track irreversible denaturation over time.

Explain what you observed

Does cooling always destroy an enzyme?

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Connect this activity with your lesson notes and chapter practice.

Read a related learning guide →Practise Enzymes →Open the student notes folder ↗

Concepts and sources

Curriculum connections: 6.3. Selected concepts.

Read the supporting source ↗PMDC curriculum ↗

Questions and explanations are original teaching material; these are not official exam questions.