Membranes & used for any commercial purpose without the written - PDF document

Slide 1 / 44 Slide 2 / 44 New Jersey Center for Teaching and Learning Progressive Science Initiative This material is made freely available at www.njctl.org and is intended for the non-commercial use of students and teachers. These materials may not be Membranes & used for any commercial purpose without the written permission of the owners. NJCTL maintains its Enzymes website for the convenience of teachers who wish to make their work available to other teachers, participate in a virtual professional learning community, and/or provide access to course Multiple Choice materials to parents, students and others. Review Click to go to website: www.njctl.org www.njctl.org Slide 3 / 44 Slide 3 (Answer) / 44 1 Cell membranes are 1 Cell membranes are __________________________ and regulate the __________________________ and regulate the materials moving into and out of the cell, in order materials moving into and out of the cell, in order to maintain equilibrium. to maintain equilibrium. Answer C A completely permeable A completely permeable B ionically permeable B ionically permeable selectively permeable selectively permeable C C [This object is a pull tab] protein permeable protein permeable D D Slide 4 / 44 Slide 4 (Answer) / 44 2 When we determine the direction and rate of 2 When we determine the direction and rate of solute movement we must consider the solute movement we must consider the _________________________ both outside and _________________________ both outside and inside of the cell, as well as the magnitude of the inside of the cell, as well as the magnitude of the concentration gradient. concentration gradient. Answer C A The concentration of all solutes added together A The concentration of all solutes added together B The concentration of water B The concentration of water C The concentration of each solute independently C The concentration of each solute independently [This object is a pull tab] D The concentration of ions only D The concentration of ions only

Slide 5 / 44 Slide 6 / 44 3 Using the information found within the illustration Use the illustration below to answer questions 3 and 4. above, determine the concentration of NaCl outside of the cell and the concentration of NaCl inside of the cell. 20gNaCl A Outside = .67g/ml; inside = 0.1g/ml 300ml water 2g NaCl, Outside = .067g/ml; inside = 0.1g/ml B 20ml water Outside = 66g/ml; inside =1g/ml C http://www.proprofs.com/quiz-school/story.php?title=practice-regents-2 Outside = 132g/ml; inside 10g/ml D Slide 6 (Answer) / 44 Slide 7 / 44 3 Using the information found within the illustration 4 Based upon the concentrations of NaCl inside and above, determine the concentration of NaCl outside of the cell, the outside environment is outside of the cell and the concentration of NaCl considered to be ____________________ relative inside of the cell. to the inside of the cell. Answer B A Outside = .67g/ml; inside = 0.1g/ml A hypertonic B Outside = .067g/ml; inside = 0.1g/ml B isotonic Outside = 66g/ml; inside =1g/ml hypotonic C C [This object is a pull tab] Outside = 132g/ml; inside 10g/ml equatonic D D Slide 7 (Answer) / 44 Slide 8 / 44 4 Based upon the concentrations of NaCl inside and 5 Solutes and water will diffuse into and out of a outside of the cell, the outside environment is cell in order to maintain considered to be ____________________ relative ________________________. to the inside of the cell. Answer A equanimity A A hypertonic a concentration gradient B isotonic B equilibrium C hypotonic C a concentration difference D D equatonic [This object is a pull tab]

Slide 8 (Answer) / 44 Slide 9 / 44 5 Solutes and water will diffuse into and out of a 6 Using the illustration, which of the statements cell in order to maintain below correctly identifies the movement of the O2 ________________________. molecules as well as the CO2 molecules? Answer A equanimity C a concentration gradient B http://www.science-assessments.com/entry/diffusion-cell-water-2 equilibrium C A O2 will diffuse into the cell while the CO2 will diffuse out of the cell. a concentration difference [This object is a pull tab] D B Both the O2 and the CO2 will diffuse out of the cell C Both the O2 and the CO2 will diffuse out of the cell D O2 will diffuse out the cell while the CO2 will diffuse into of the cell. Slide 9 (Answer) / 44 Slide 10 / 44 6 Using the illustration, which of the statements 7 A cell will likely shrink or shrivel up when placed below correctly identifies the movement of the O2 into a ______________________ environment. molecules as well as the CO2 molecules? A Hypotonic Answer A Hypertonic B Isotonic C http://www.science-assessments.com/entry/diffusion-cell-water-2 A O2 will diffuse into the cell while the CO2 will diffuse out of D Neutral tonic the cell. B Both the O2 and the CO2 will diffuse out of the cell [This object is a pull tab] C Both the O2 and the CO2 will diffuse out of the cell D O2 will diffuse out the cell while the CO2 will diffuse into of the cell. Slide 10 (Answer) / 44 Slide 11 / 44 7 A cell will likely shrink or shrivel up when placed 8 During osmosis, diffusion of water molecules will into a ______________________ environment. move from A Hypotonic A areas of low solute concentration to areas of high solute Answer concentration B Hypertonic B B areas of high solute concentration to areas of low solute Isotonic C concentration Neutral tonic D C areas of equal solute concentration to areas of unequal [This object is a pull tab] solute concentration D areas of low water concentration to areas of high water concentration

Slide 11 (Answer) / 44 Slide 12 / 44 8 During osmosis, diffusion of water molecules will 9 Which of the following best describes the move from characteristics of the fluid mosaic model of cell membranes? A areas of low solute concentration to areas of high solute concentration A Fluid because the phospholipids can move and mosaic Answer A because the phospholipids form different shapes.. B areas of high solute concentration to areas of low solute concentration Fluid because the membrane has water between the B phospholipids and mosaic because the phospholipids C areas of equal solute concentration to areas of unequal differ from each other. solute concentration [This object is a pull tab] Fluid because water can diffuse through the membrane D areas of low water concentration to areas of high water and mosaic because different molecule types can also C concentration diffuse through. D Fluid because of the movement of phospholipids and mosaic because of the proteins. Slide 12 (Answer) / 44 Slide 13 / 44 9 Which of the following best describes the 10 What do simple diffusion and facilitated diffusion characteristics of the fluid mosaic model of cell have in common? membranes? A They both involved the movement of molecules from low Answer A Fluid because the phospholipids can move and mosaic concentration to high concentration. D because the phospholipids form different shapes.. B They both involve the movement of molecules but Fluid because the membrane has water between the facilitated diffusion requires energy. phospholipids and mosaic because the phospholipids B C They both involve the movement of large molecules that differ from each other. require special channels to diffuse. [This object is a pull tab] Fluid because water can diffuse through the membrane D They both involve the movement of molecules from high C and mosaic because different molecule types can also concentration to low concentration. diffuse through. D Fluid because of the movement of phospholipids and mosaic because of the proteins. Slide 13 (Answer) / 44 Slide 14 / 44 10 What do simple diffusion and facilitated diffusion 11 How do carrier proteins and channel proteins have in common? differ in their roles within the cell membrane? A They both involved the movement of molecules from low A Carrier proteins are integral proteins while channel concentration to high concentration. Answer proteins are peripheral proteins D B They both involve the movement of molecules but Carrier proteins are utilized for both facilitated and active facilitated diffusion requires energy. transport while channel proteins function only in passive B transport. C They both involve the movement of large molecules that require special channels to diffuse. C Carrier proteins function in passive transport while [This object is a pull tab] channel proteins function in active transport. D They both involve the movement of molecules from high concentration to low concentration. D Carrier proteins function in osmosis while channel proteins function in active transport.