Explain active transport
The movement of substances against a concentration gradient, requires energyUse diagram
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Related Biology GCSE answers
All answers ▸a) What is the function of the atrioventricular valves? b) When the ventricles are contracting, are the arterioventricular valves open or closed? c) Explain why the muscle walls of the atria are thinner than the walls of the ventricles.
What's the difference between prokaryotic cells and eukaryotic cells
Compare and contrast aerobic and anaerobic respiration.
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