Listen 10 76 KEY TERMS: Did You Get It? | 1. Match each term to its definition, as identified by its preceding letter code. A A partially permeable phospholipid bilayer forming the boundary of all cells. B Movement of substances across a biological membrane without energy expenditure. active transport carier protein C The passive movement of molecules from high to low concentration. concentration gradient D A type of passive transport facilitated by transport proteins. E A membrane-bound protein involved in the transport of a specific molecule across the membrane either by active transport or facilitated diffusion. diffusion F The energy-requiring movement of substances across a biological membrane against a concentration gradient. endocytosis facilitated diffusion ...... G Chemical used to enhance the contrast or highlight specific parts be viewed under a microscope. a cell or tissue to ion pump H A transmembrane protein that moves ions across a plasma membrane against their concentration gradient. osmosis I Passive movement of water molecules across a partially permeable membrane down a concentration gradient. passive transport J The gradual difference in the concentration of solutes in a solution between two regions. In biology, this usually results from unequal distribution of ions across a membrane. plasma membrane K Active transport in which molecules are engulfed by the plasma membrane, forming a phagosome or food vacuole within the cell. stain 2. The diagrams below depict what happens when a red blood cell is placed into three solutions with differing concentrations of solutes. Describe the tonicity of the solution (in relation to the cell) and describe what is happening: 3. Consider the two diagrams below. For each, draw in the appropriate box what you would expect to see after one hour. Particle with diameter of 5 nm Particle with After one hour: diameter of 20 nm Scluble particles placed in at high concentration Container of water at 20° C Partially permeable membrane with pores of 10 nm.

Listen 10 76 KEY TERMS: Did You Get It? | 1. Match each term to its definition, as identified by its preceding letter code. A A partially permeable phospholipid bilayer forming the boundary of all cells. B Movement of substances across a biological membrane without energy expenditure. active transport carier protein C The passive movement of molecules from high to low concentration. concentration gradient D A type of passive transport facilitated by transport proteins. E A membrane-bound protein involved in the transport of a specific molecule across the membrane either by active transport or facilitated diffusion. diffusion F The energy-requiring movement of substances across a biological membrane against a concentration gradient. endocytosis facilitated diffusion ...... G Chemical used to enhance the contrast or highlight specific parts be viewed under a microscope. a cell or tissue to ion pump H A transmembrane protein that moves ions across a plasma membrane against their concentration gradient. osmosis I Passive movement of water molecules across a partially permeable membrane down a concentration gradient. passive transport J The gradual difference in the concentration of solutes in a solution between two regions. In biology, this usually results from unequal distribution of ions across a membrane. plasma membrane K Active transport in which molecules are engulfed by the plasma membrane, forming a phagosome or food vacuole within the cell. stain 2. The diagrams below depict what happens when a red blood cell is placed into three solutions with differing concentrations of solutes. Describe the tonicity of the solution (in relation to the cell) and describe what is happening: 3. Consider the two diagrams below. For each, draw in the appropriate box what you would expect to see after one hour. Particle with diameter of 5 nm Particle with After one hour: diameter of 20 nm Scluble particles placed in at high concentration Container of water at 20° C Partially permeable membrane with pores of 10 nm.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 6RE

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