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NAME______________________ DATE_________ PERIOD_________ Cell Membrane Transport Coloring Worksheet KEY Match the cell membrane structure or its function with the correct letter from the cell membrane diagram. Refer to the cell membrane coloring worksheet to label structures with the correct functions Letter __G__ __I__ __C/E__ Structure/Function Attracts water Helps maintain flexibility of membrane Involved in cell-to-cell recognition Letter Structure/Function __F__ __A__ Repels water __B__ Help transport certain materials across the cell membrane Make up the bilayer Osmosis and Tonicity Diffusion of water across a selectively permeable membrane. Define osmosis. In which direction does water move across membranes, up or down the concentration gradient? Down the concentration gradient Define these 3 terms: a. isotonicSolutions inside and outside cell have equal water and solute concentration b. hypertonic Solute concentration outside cell is higher than inside cell; cell loses water c. hypotonic Solute concentration outside cell is lower than inside cell; cell gains water 1 Use arrows to show the direction of water movement into or out of each cell. Color and label the cell in an isotonic environment light blue, the hypotonic environment yellow, and the hypertonic environment light green. Match the description or picture with the osmotic condition: A. Isotonic __C___ solution with a lower solute concentration __A__ solution in which the solute concentration is the same B. Hypertonic __A__ condition plant cells require __A___ condition that animal cells require C. Hypotonic __C___ red blood cell bursts (cytolysis) __B___ plant cell loses turgor pressure (Plasmolysis) __B__ solution with a higher solute concentration __C__ plant cell with good turgor pressure __C___ solution with a high water concentration Label the tonicity for each solution (isotonic, hypotonic, or hypertonic): Hypotonic Isotonic 2 Hypertonic Hypotonic Isotonic Hypertonic Onion Cell Osmosis Transport Requiring Energy What type of transport is represented by the following picture? Active Transport What energy is being used? ATP In which direction (concentration gradient), is the movement occurring? Against the concentration gradient or up the gradient Color the internal environment of the cell yellow. Color and Label the transport proteins red and the substance being moved blue. 3 One type of active transport is called the Na+/K+ pump which helps muscle cells contract. This pump uses proteins to move ions against/up the concentration gradient. The protein that is used to pump the ions through is called a channel/carrier protein and it changes its shape to move the ions across the cell membrane. Label and color the carrier proteins red and the ions green. Sodium-Potassium Pump Endocytosis and Exocytosis Ameoba eating paramecia 4
