Cambridge IGCSE Biology, topic 7
Human nutrition
Human nutrition is about how the body gets the materials and energy it needs from food. You will learn what a balanced diet contains, how the organs of the digestive system break food down physically and chemically, and how the small soluble products are absorbed into the blood.
Revision notes
Worksheet
FlashcardsSubtopics
Work through them in order. Each one has notes, exam questions and flashcards, and a PDF of each.
- 1Diet Spec 7.1A balanced diet, the sources and importance of each nutrient, and the causes of scurvy and rickets.NotesQuestions 6Flashcards 8
- 2The digestive system Spec 7.2, 7.3The organs of the alimentary canal and associated organs, the five processes of nutrition, teeth, and physical digestion in the mouth and stomach.NotesQuestions 7Flashcards 13
- 3Chemical digestion Spec 7.4How digestive enzymes break large insoluble molecules into small soluble ones, where they are made and act, and the digestion of starch and protein.NotesQuestions 7Flashcards 8
- 4Absorption Spec 7.5Where nutrients and water are absorbed, and how the structure of a villus is adapted for absorption in the small intestine.NotesQuestions 5Flashcards 5
Whole topic
When you have done the subtopics: test yourself on everything, or print the lot.