BIO 181L Lecture Notes - Lecture 3: Starch, Membrane Transport Protein, Facilitated Diffusion
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1 describe a possible or actual error in your diffusion experiment and describe what you would change or fix if you were to do the experiment again. (1pt) The tube clamps could have not been fully clamped properly, thus allowing the escape of both the starch and the glucose. To fix this error you need to make sure that the clamor are fully on and will not allow any escape of fluid that does not permeate through the dialysis membrane. 2 how do cells such as algae and protists avoid lysis in fresh water? (1pt) 3 describe an adaptation that increases the surface area-to-volume ratio. The algae and protists avoid lysis by collapsing the membrane and becoming elongate. This was seen in part c of the experiment. (and thus the rate of diffusion) at the cellular level (not the organ or organism level). Animal cells are naturally circular in shape, which gives a higher surface area to volume.
