Biology Paper 1 · B4 · Lesson 4.6
Transferring energy without oxygen, in muscles and yeast.
During vigorous exercise, anaerobic respiration can contribute when oxygen supply is insufficient. In muscle cells: glucose → lactic acid. Glucose is not fully oxidised, so much less energy is transferred per glucose than aerobically.
Anaerobic means without oxygen. It does not mean without energy transfer.
No timer. Read the explanation after each answer.
Daily 5 · Core exam practice · Higher Tier questions · A4 revision sheet
Lessons 4.1–4.8 cover the core. Lessons 4.9–4.10 are Higher Tier only. Daily 5 practises core facts.
AQA Combined Science Trilogy specification · 4.4.2.1. Original notes, questions and diagrams. Experimental numbers are illustrative.
Photographs: pondweed by Frank Vincentz; dough by ElinorD, both CC BY-SA 3.0. Polytunnel by Bob Nichols / USDA, public domain. Images displayed without cropping or other alterations.
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