Explain use the lock-and-key model as a simplified explanation of enzyme action in the context of Animal tissues, organs and organ systems.

enzyme is the starting point for this answer. Students should be able to use the lock-and-key model as a simplified explanation of enzyme action. A clear answer should keep that idea linked to The human digestive system in Animal tissues, organs and organ systems. You can support the point by showing that enzyme is a curriculum-aligned term linked to the learning objective: Use the lock-and-key model as a simplified explanation of enzyme action. Do not giving a vague answer instead of directly addressing: Use the lock-and-key model as a simplified explanation of enzyme action; instead answer by clearly explaining how to use the lock-and-key model as a simplified explanation of enzyme action.

This question expects a structured explanation, not a single isolated fact. Credit comes from naming the correct idea, using precise biological vocabulary, and keeping the answer anchored to The human digestive system. Use precise biological vocabulary when you explain how to use the lock-and-key model as a simplified explanation of enzyme action.