CellTransportStudyGuide - AP BIOLOGY CELL UNIT ACTIVITY#5...

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Cell Unit Activity #5 page 1 AP BIOLOGY NAME_____________________ CELL UNIT ACTIVITY #5 DATE___________HOUR_____ C ELL T RANSPORT M EMBRANE P ROPERTIES P ASSIVE T RANSPORT C HARACTERISTICS : D IFFUSION :
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Cell Unit Activity #5 page 2 O SMOSIS : I SOTONIC H YPOTONIC H YPERTONIC A NIMAL C ELLS P LANT C ELLS
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Cell Unit Activity #5 page 3 O SMOREGULATION – A DAPTATIONS Paramecium Fresh Water Bony Fish Marine Bony Fish F ACILITATED D IFFUSION :
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Cell Unit Activity #5 page 4 A CTIVE T RANSPORT C HARACTERISTICS : N A +/K+ P UMPS : O THER E XAMPLES :
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Cell Unit Activity #5 page 5 C OTRANSPORT : T RANSPORT OF L ARGE M OLECULES :
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Cell Unit Activity #5 page 6 T YPES OF E NDOCYTOSIS P HAGOCYTOSIS P INOCYTOSIS R ECEPTOR -M EDIATED E NDOCYTOSIS Q UESTIONS : 1. Use the key below to indicate how each class of materials is transported across the membrane. A. Diffuses through the membrane. B. Small enough to pass through the spaces between the phospholipid molecules. C. Requires the assistance of transport proteins. ______ Nonpolar materials ______ Water ______ Ions ______ Large polar uncharged molecules ______ Small polar uncharged molecules
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Cell Unit Activity #5 page 7 2. What is the role of transport proteins in biological membranes? _____________________________________________________________ _____________________________________________________________ 3. Describe how each of the following affect the rate of diffusion. a. Molecular size:____________________________________________ b. Temperature:_____________________________________________ 4. A semipermeable sac, containing 4% NaCl, 9% glucose, and 10% albumin, is suspended in a solution with the following composition: 10% NaCl, 10% glucose, and 40% albumin. Assume the sac is permeable to all substances except albumin. Use the key provided to determine how each substance will move. ______ Glucose A. Moves into the sac ______ Albumin B. Moves out of the sac ______ Water C. Does not move ______ NaCl 5. The diagrams below show three microscopic fields (A-C) containing red blood cells. Arrows indicate the direction of net water movement. Answer the following questions. a. Which microscopic field shows a hypertonic environment?__________ b. Which microscopic field shows a cell hypertonic to its environment? ________________________________________________________ c. Which microscopic field shows an isotonic environment?____________
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Cell Unit Activity #5 page 8 d. Describe what is happening to the cells in Field C. ________________________________________________________ Explain why this is happening.________________________________
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CellTransportStudyGuide - AP BIOLOGY CELL UNIT ACTIVITY#5...

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