This study source was downloaded by 100000842013433 from CourseHero com on 02 24 2022 01 28 14 GMT 06 00 https www coursehero com file 31739662 Cell Membrane Tonicity Worksheet13docx NAME DATE PERIOD Cell Membrane Tonicity Worksheet Composition of the Cell Membrane Functions Fill in the blanks with the appropriate term Some terms may not be used PlasmaBilayer CholesterolHead TailsChainsLipidProteinsIntegral FreelyPolarGlucoseDiffusionEnergy Phosphate Fatty AcidsDown Repels Peripheral Recognition Cell With The cell membrane is also called the membrane and is made ofa phospholipid The phospholipids have a hydrophilic waterattracting and two hydrophobic water repelling Thehead of a phospholipid is made of an alcohol and group while thetails are chains of Phospholipids can move andallow non polar and other molecules to pass through into or out of the cell This is known assimple because it does not require and the water ormolecules are moving the concentration gradient Another type of lipid in the cell membrane is that makes the membrane more fluid Embedded in the phospholipid bilayer are that also aid in diffusion and in cell recognition Proteins called proteins go all the way through the bilayer Large molecules like or carbohydrates use proteins to help move across cell membranes Some of the membrane proteins have carbohydrate attached to helpcells in recognize each other and certain molecules List 2 functions of the cell or plasma membrane a b Label the parts of the cell membrane 1 SKETCH ANDLABEL aphospholipidcoloring the headsred and the tailsblue This study source was downloaded by 100000842013433 from CourseHero com on 02 24 2022 01 28 14 GMT 06 00 https www coursehero com file 31739662 Cell Membrane Tonicity Worksheet13docx Match the cell membrane structure or its function with the correct letter from the cell membrane diagram Letter Structure Function Letter Structure Function Attracts water Repels water Helps maintain flexibility of membrane Make up the bilayer Involved in cell to cell recognition Help transport certain materials across the cell membrane Define osmosis In which direction does water move across membranes up or down the concentration gradient Define these 3 terms a isotonic b hypertonic c hypotonic 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 solution with a lower solute concentration solution in which the solute concentration is the same B Hypertonic condition plant cells require condition that animal cells require C Hypotonic red blood cell bursts cytolysis plant cell loses turgor pressure Plasmolysis solution with a higher solute concentration plant cell with good turgor pressure solution with a high water concentration 2 This study source was downloaded by 100000842013433 from CourseHero com on 02 24 2022 01 28 14 GMT 06 00 https www coursehero com file 31739662 Cell Membrane Tonicity Worksheet13docx Label the tonicity for each solution isotonic hypotonic or hypertonic Transport Requiring Energy What type of transport is represented by the following picture What energy is being used In which direction concentration gradient is the movementoccurring Color the internal environment of the cell yellow Color andLabel the transport proteins red and the substance being movedblue One type of active transport is called the pump which helps muscle cells contract This pump uses to move ions the concentration gradient The protein that is used to pump the ions through is called a protein and it changes its to move the ions across the cell membrane Label and color the carrier proteins red and the ions green 3 This study source was downloaded by 100000842013433 from CourseHero com on 02 24 2022 01 28 14 GMT 06 00 https www coursehero com file 31739662 Cell Membrane Tonicity Worksheet13docx 4 This study source was downloaded by 100000842013433 from CourseHero com on 02 24 2022 01 28 14 GMT 06 00 https www coursehero com file 31739662 Cell Membrane Tonicity Worksheet13docx TONICITY AND OSMOSIS Part I Fill in the blanks A is a fluid in which a substance is dissolved A is a substance dissolved in a solvent A is a combination of solute and solvent The process by which water diffuses across a membrane called Part II Look at the solutions illustrated above and fill in the blanks 1 Solution B is to Solution A This is because Solution B has a greater concentration of in it than does Solution A Solution C has no solutes dissolved in it therefore it is to both Solutions A and B 2 As a relative concentration of solutes in two solutions increases of necessity the concentration of water in the same two solutions Solution A has a lower concentration of than does Solution C Solution A is also hypertonic to Solution C 3 If you wanted to make Solution A isotonic to Solution B you could add water to Solution or you could add solute to Solution If you took all three solutions put them into a large container and mixed them thoroughly then redistributed the solution among three containers Solution A would be to Solution B Solution A would also be to Solution C and Solution C would be to Solution B Part III Look at the solutions and cells illustrated above and fill in the blanks 1 Because the cytoplasm of the plant and the animal cell have equal concentrations of solutes we can say their cytoplasm are to each other If we put both the plant and the animal cells into Solution A we would expect no change in the cells because Solution A is to the cytoplasm of each cell 2 Let s put both cells into Solution B Because Solution B is hypertonic to the cytoplasms ofthe cells we would expect water to the cells through the process of This would result in the cytoplasm of both cells shrinking 5 This study source was downloaded by 100000842013433 from CourseHero com on 02 24 2022 01 28 14 GMT 06 00 https www coursehero com file 31739662 Cell Membrane Tonicity Worksheet13docx Powered by TCPDF www tcpdf org 3 Now we ll put both the plant and animal cell into Solution C which because it contains no solutes at all is to the cytoplasm of both cells will enter both cells through osmosis The animal cell is likely to unfortunately The plant cell however is protected from this because of the presence of its Refer to the U tube pictures above when answering the questions below 1