AQA GCSE Combined Science: Trilogy, topic 4
Bioenergetics
Plants use light to make glucose in photosynthesis, which also releases oxygen. Living things then use that glucose in respiration to transfer the energy they need for life. This topic covers both processes, what limits photosynthesis, how the body responds to exercise, and how all the reactions in a cell are linked as metabolism.
Examined in Biology Paper 1 (1 hour 15 minutes, 70 marks). Combined Science: skip anything labelled Triple only.
Revision notes
Worksheet
FlashcardsSubtopics
Work through them in order. Each one has notes, exam questions and flashcards, and a PDF of each. Triple-only subtopics are left out.
- 1Photosynthesis Spec 4.4.1The photosynthesis equation, the factors that limit its rate, the required practical with pondweed, and what plants do with the glucose they make.NotesQuestions 11Flashcards 25
- 2Respiration Spec 4.4.2Aerobic and anaerobic respiration, how the body responds to exercise, oxygen debt, and metabolism as the sum of all reactions in a cell or body.NotesQuestions 10Flashcards 27
Whole topic
When you have done the subtopics: test yourself on everything, or print the lot.