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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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Digestion & Enzymes

Science · Organisms & Life Processes · conceptual

Describe the organs of the human digestive system and how food is physically and chemically digested, including the role of enzymes as biological catalysts

What mastery looks like

  • Traces the journey of food from mouth to large intestine, naming each organ and its role
  • Explains what enzymes do and names where they are produced (salivary glands, stomach, small intestine)
  • Distinguishes physical digestion (chewing, churning) from chemical digestion

Check your understanding

If Digestion & Enzymes ate a meal with you, could they describe what happens to the food step by step as it travels through the body — naming the organs it passes through and what each one does?