Biology 1 3.0 / 5 based on 1 rating ? BiologyGCSEAQA Created by: tamsin pearceCreated on: 10-05-13 18:22 what type of membrane is the cell membrane? partially permeable 1 of 10 why does active transport require energy? the particles are being absorbed against the concentration gradient. 2 of 10 why is glucose used during exercise? glucose is used in the process of respiration to release energy 3 of 10 how are mineral ions lost from the body during exercise? during sweating 4 of 10 which stucture increases the surface area of the lung? alveoli 5 of 10 which muscles contract when you breath in? intercostal muscles and diaphragm 6 of 10 what is one advantage of a positive pressure breathing aid compared to the iron lung? much smaller,can be used at home, dont have to lie in a metal case, 7 of 10 give 2 features of the villi which make them efficient exchange surfaces? large surface area, thin walls 8 of 10 why do leaves have stomata? to allow gases to diffuse in and out of the leaf 9 of 10 by what process does water vapour move out of the leaves? diffusion 10 of 10
Comments
No comments have yet been made