Survey
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
Download Cell Membrane and Transport Worksheet
Document related concepts
no text concepts found
Transcript
NAME___________________________ DATE______________ PERIOD_____ Cell Membrane & Cell Transport Composition of the Cell Membrane & Functions Use your class notes and/or chapter 7 in your textbook to complete the sentences below. Word Bank: Along Around Bilayer Carbohydrate Cholesterol Diffusion Energy Fatty acids Head Integral Peripheral Phosphate Plasma Proteins Small Tails The cell membrane is also called the _______________ membrane and is made of a phospholipid _____________. The phospholipids have a hydrophilic (water attracting) __________ and two hydrophobic (water repelling) ____________. The head of a phospholipid is made of an alcohol and __________ group, while the tails are chains of ____________. Phospholipids can move _______________ and allow water and other _________ molecules to pass through into or out of the cell. This is known as simple ____________ because it does not require __________ and the water or molecules are moving __________ the concentration gradient. The cell membrane is responsible for controlling what enters and leaves the cell, separating internal metabolic reactions from the external environment, allowing the cell to interact with its environment and allowing the cell to excrete wastes. SKETCH AND LABEL a phospholipid. COLOR the heads RED and the tails BLUE. PHOSPHOLIPID 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, while ____________ proteins are only on one side. Integral proteins are also called transmembrane proteins. Large molecules like glucose or other carbohydrates use proteins to help move across cell membranes. Some of the membrane proteins have __________________ (glycoprotein) markers attached to help cells recognize each other and certain molecules. 1 1. List 4 functions of the plasma (cell) membrane: a. _____________________________________________________ b. _____________________________________________________ c. _____________________________________________________ d. _____________________________________________________ 2. Correctly COLOR code and identify the name for each part of the cell membrane. Letter Name/Color Letter Name/Color _____ Phospholipid bilayer (no color) _____ Cholesterol (blue) _____ Transmembrane protein (pink) _____ Glycoprotein (green) _____ Fatty acid tails (orange) _____ Peripheral protein [not _____ Phosphate heads (yellow) “transmembrane”] (red) 3. 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 ______ makes up the bilayer membrane ______ help transport certain ______ involved in cell-to-cell materials across the cell recognition membrane 2 Name __________________________ Date ________________ Period ____ Osmosis and Tonicity 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 B. Hypertonic C. Hypotonic _____ _____ _____ _____ _____ _____ _____ _____ _____ solution with a lower solute concentration solution in which the solute concentration is the same condition plant cells require condition that animal cells require 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 3 Label the diagrams for each solution (isotonic, hypotonic, or hypertonic): ____________ ______________ ____________ ______________ ______________ _______________ Transport Requiring Energy What type of transport does the picture shown below represent? Is movement occurring with or against the concentration gradient? ____________ Color the internal environment of the cell yellow. Color and Label the transport proteins red and the substance being moved blue. 4
