Enzymes and Digestion — Interactive Lesson (Ages 14–16)

How does a plate of yam and beans become molecules small enough to enter the blood? This 21-slide interactive lesson on digestive enzymes takes pupils from first ideas to exam-style explanations, with 13 self-marking activities and nothing to prepare beforehand.

Teaching Enzymes and Digestion in GCSE Biology

Pupils explain how enzymes work using the lock and key model, why they have an optimum temperature and pH, and why denaturing is permanent. They match carbohydrases, proteases and lipases to their substrates and products, identify where each is made, explain the two jobs of bile and interpret results from the amylase and iodine practical.

What Pupils Will Learn

• Explain how enzymes work using the lock and key model.
• Explain how temperature and pH affect enzyme activity.
• Name the enzymes that digest carbohydrates, proteins and lipids, and their products.
• State where digestive enzymes and bile are produced.
• Explain the two jobs of bile.

What’s Included

• 21-slide interactive lesson on digestive enzymes
• 13 self-marking activities: multiple-choice questions, true-or-false checks, sorting tasks, drag-and-drop categorising and fill-in-the-gap questions
• Step-by-step teaching cards that reveal one point at a time
• A written explanation task with a model answer for self-assessment

Why Teachers Love It

• No prep — open it on an interactive whiteboard, laptop or tablet
• Instant feedback explains every answer, right or wrong
• Everyday examples make biology feel real
• Works for whole-class teaching, independent study or revision

Curriculum Alignment

Supports UK GCSE Biology and Combined Science (AQA, Edexcel and OCR) and the Nigerian Senior Secondary Biology curriculum (SS1–SS2), including WAEC and NECO exam preparation.

Love this? You’ll love…

• Osmosis and Active Transport — Interactive Lesson (Ages 14–16)
• Aerobic and Anaerobic Respiration — Interactive Lesson (Ages 14–16)

Bring digestive enzymes to life today — Add to Basket.

FAQ

What year groups is this for? Years 10–11 (ages 14–16), and SS1–SS2 in Nigeria.

Is it self-marking? Yes — all 13 activities give instant feedback.

Do pupils need to log in? No. The lesson runs in any modern web browser.

Can I use it for revision? Yes. Pupils can replay it as often as they like, and the results screen shows which questions to review before a test.