Name ________________________________________________ Date ___________________ Tab __________________ Cellular Transport (Passive and Active) Worksheet Part I. Match the term with its correct description (HINT cross each word off as you use it!): A. energy H. facilitated diffusion O. solvent B. exocytosis I. hypotonic P. percent concentration C. endocytosis J. osmosis Q. selectively permeable D. passive transport K. hypertonic R. small, uncharged E. large, charged L. solute S. transport protein F. active transport M. isotonic T. ATP G. diffusion N. equilibrium U. carrier protein ________ The stuff that does the dissolving in a solution ________ This describes the cell membrane, showing how it lets some things through and blocks other things ________ These types of molecules are always allowed through the membrane ________ Is used during active transport but not passive transport ________ Process by which a cell takes in material by forming a vessicle around it ________ Movement of molecules across a membrane from an area of higher concentration to an area of lower concentration ________ Process by which a cell expels wastes from a vessicle ________ This is the unit of energy that cells use to perform active transport ________ Solution where the concentration of molecules is even across the membrane ________ The diffusion of water through a cell membrane ________ Transport protein that changes shape when a molecule binds with it ________ These types molecules are not allowed to pass through the cell membrane ________ Solution where the water is more concentrated inside of the cell than outside ________ These important molecules are in the cell membrane and they allow the passage of large, charged molecules ________ The stuff that is dissolved in a solution ________ The movement of substances through the cell membrane without the use of cellular energy ________ When energy is required to move materials through a cell membrane ________ When concentration of molecules is even across the membrane ________ Solution where the water is more concentrated outside of the cell than inside ________ (Solute/Solvent) x 100 – describes how much of a solution is comprised of the solute ________ When large or charged molecules move down their concentration gradient and across a membrane with the help of a protein. Part II. Label the diagrams of cells using the following terms: DIFFUSION, ACTIVE TRANSPORT, OSMOSIS, or EQUILIBRIUM. The arrows show the direction of transport. You may use the terms more than once! High
8 H2O
25 glucose
CO2
molecules
molecules
levels
2 H2O molecules
5 glucose molecules
Low CO2 levels
High
10 H2O
2 H2O
protein
molecules
molecules
levels
8 H2O molecules
Low protein levels
10 H2O molecules
Part III. 1. Describe the processes occurring in the following pictures: 2. At which solution of concentration gradient is each cell diagram? (Hypotonic, Hypertonic, Isotonic) a. _______________________________ b. ___________________________________ c. _____________________________________ Part IV. 1. What happens to animal cells when placed in the following solutions – DRAW and LABEL your response. a. Isotonic solution: b. Hypotonic solution: c. Hypertonic solution: 2. If the cell had to use ACTIVE TRANSPORT to keep the water level constant and pump the water against the concentration, which direction would the water be pumped –into or out of the cell? Hypotonic solution: Hypertonic solution: 3. Describe the differences between ACTIVE TRANSPORT and PASSIVE TRANSPORT in the space below. Part V. Describe the following terms: 1. Describe diffusion: • Moves things into/out of the cell (circle one or both!) • Moves from high-­‐to-­‐low/low-­‐to-­‐high concentration (circle one) • For large/small molecules (circle one or both!) • Uses/does not use transport protein (circle one) 2. Describe osmosis: • Moves things into/out of the cell (circle one or both!) • Moves from high-­‐to-­‐low/low-­‐to-­‐high concentration (circle one) • For large/small molecules (circle one or both!) • Uses/does not use transport protein (circle one) 3. Describe facilitated diffusion • Moves things into/out of the cell (circle one or both!) • Moves from high-­‐to-­‐low/low-­‐to-­‐high concentration (circle one) • For large/small molecules (circle one or both!) • Uses/does not use transport protein (circle one) 4. Describe passive transport: • Moves things into/out of the cell (circle one or both!) • Moves from high-­‐to-­‐low/low-­‐to-­‐high concentration (circle one) • For large/small molecules (circle one or both!) • Uses/does not use transport (circle one) 5. Describe active transport: • Moves things into/out of the cell (circle one or both!) • Moves from high-­‐to-­‐low/low-­‐to-­‐high concentration (circle one) • For large/small molecules (circle one or both!) • Uses/does not use transport protein (circle one) 6. Describe endocytosis: • Example of active/passive (circle one) • Moves things into/out of the cell (circle one or both!) • For very large/small molecules (circle one or both!) 7. Describe exocytosis: • Example of active/passive (circle one) • Moves things into/out of the cell (circle one or both!) • For very large/small molecules (circle one or both!)