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  1. The movement of water molecules across a semi permeable membrane is called?



  1. List 3 points about diffusion



  1. A perfume bottle is open in the far corner of the room. The perfume moves across the room so that a person standing on the other side can smell it. This is an example of?



  1. Define Hypertonic solution?



  1. What type of solution do humans strive for?



  1. Why is excessive intake of water is discouraged?



  1. What happens to cells if you do not re-hydrate after sweating?



  1. What happens when a plant cell is placed in a hypotonic solution?



  1. State two differences between Osmosis and Diffusion?



  1. Which of the following graphs

       represents the surface

       area to volume ratio versus the

       length of a cube?




  1. Explain the importance of SA:V ratio?



  1. Name 3 methods by which a cell is able to obtain its nutrients



  1. How does facilitated diffusion differ from Diffusion



  1. Name and describe two type of Endocytosis



  1. Explain how Exocytosis works



  1. What is the main source of energy used by cells?



  1. What happens to animal cell within a hypotonic solution. Explain why?



  1. What are two types of protein channels and how do they differ?



  1. The picture on the right shows red

       blood in three different solutions.

       Which is hypertonic, hypotonic and

        isotonic?





  1. Define the term active transport




  1. Donated organs stored prior to tranplanting must be kept in carefully controlled solutions. Ideally they should be stored in:


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