B3.1 0.0 / 5 ? BiologyGCSEAQA Created by: ChloeCreated on: 11-05-13 14:34 Why does active transport require energy? The particles are being absorbed against a concentration gradient. 1 of 8 Why is glucose lost during exercise? Glucose is used in the process of respiration to release energy. 2 of 8 How are mineral ions lost from the body during exercise? By sweating. 3 of 8 Which structures increase the surface area of the lungs? Alveoli. 4 of 8 Which muscles contract when you breathe in? The intercostal muscles and diaphragm. 5 of 8 What features of Villi make efficient exchange surfaces? Large surface area, good blood supply, thin walls. 6 of 8 Why do leaves have Stomata? To allow gases to diffuse in and out of the leaf. 7 of 8 By what process does does water vapour move out of leaves? Diffusion 8 of 8
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