Pearson eText Biology: Science for Life with Physiology -- Instant Access (Pearson+)
6th Edition
ISBN: 9780135214114
Author: Colleen Belk, Virginia Maier
Publisher: PEARSON+
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Textbook Question
Chapter 3, Problem 2LTB
Add labels to the figure that follows, which illustrates some molecules that can and cannot pass through cell membranes unaided.
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Students have asked these similar questions
Imagine that a cell has a plasma membrane made ONLY of phospholipids and contains no proteins. Classify the molecules listed below
according to whether or not they are likely to diffuse across the plasma membrane.
Fatty acids
Rapid Diffusion
Across the Plasma
Membrane
Slow/No Diffusion
Across the Plasma
Water
Membrane
Oxygen
Glucose
Ca2+
Steroid
hormones
Compare and contrast the four basically different ways that a substance can move across the plasma membrane. Present it in a matrix.
A section of a cell membrane Is shown in the diagram below.
CELL MEMBRANE
Low Concentration
of Substances
Outside Cell
Cell
Membrane
Inside Cell
High Concentration
of Substances
Which type of membrane transport by a carrier proteln is most likely shown in the diagram if energy is NOT being used?
osmosis
simple diffusion
active transport
facilitated diffusion
Direction of Substance Movement
Chapter 3 Solutions
Pearson eText Biology: Science for Life with Physiology -- Instant Access (Pearson+)
Ch. 3 - Prob. 1LTBCh. 3 - Add labels to the figure that follows, which...Ch. 3 - Prob. 3LTBCh. 3 - Which of the following is not a function of water?...Ch. 3 - Prob. 5LTBCh. 3 - Prob. 6LTBCh. 3 - Prob. 7LTBCh. 3 - Prob. 8LTBCh. 3 - Which of the following forms of membrane transport...Ch. 3 - Prob. 10LTB
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- Sketch out a cross section of a cell membrane showing the a proposed transporter involved in either diffusion or active transport. Include and label the following phospholipid bilayer show head group and tails .hydrophilic and hydrophobic region labeledarrow_forwardThe fluid mosaic model of the membrane describes the membrane as: containing a significant quantity of water in the interior composed of fluid phospholipids on the outside and protein on the inside composed of proteins on the outside and phospholipids on the inside made of proteins embedded into a fluid phospholipid bilayerarrow_forwardWhich of the following statements about a typical plasma membrane is correct? The hydrophilic interior of the membrane is composed primarily of the fatty acid tails of the phospholipids. Carbohydrates on the membrane surface are important in determing the overall bilayer structure. Phospholipids are the primary component that determines which solute can cross the plasma membrane. The two sides of the plasma membrane have different lipid and protein composition. The plasma membrane is covalently linked network of phospholipids and proteins that controls the movement of solutes into and out of a cell.arrow_forward
- The plasma membrane consists mainly of: A Proteins embedded in a carbohydrate bilayer B Phospholipids embedded in a protein bilayer C Proteins embedded in a phospholipid bilayer D Proteins embedded in a polymer of glucose moleculesarrow_forwardEthanol, the active ingredient in alcoholic beverages, is a small, polar, charged molecule. How does this substance enter the cell? Select the best answer Question options: Ethanol is soluble in the membrane, so it can diffuse into the cell. Ethanol is soluble in the membrane, so it moves through a channel protein. Ethanol is insoluble in the membrane, so it is brought in by endocytosis. Ethanol is insoluble in the membrane, so it is actively pumped into the cell. Ethanol is insoluble in the membrane, so it moves through a channel protein.arrow_forwardExplain (using the correct terminology and drawing an image) what happens to the cells in the following environments: A human blood cell (0.9% salt) is placed in a saltwater tank (27.5% salt). - A bacterial cell with 35% organic material in their cytoplasm is living in a tank filled with 35% sulfur. - A freshwater plant cell (75% water) is living in a pond that floods over.arrow_forward
- Jubutunce, TUr example, how the When molecules move from areas of high concentration to areas of low concentration Label the diagrams of cells using the following terms: diffusion, active transport, osmosis, facilitated diffusion, or equilibrium. The arrows show the direction of transport. You may use the terms more than once! High CO2 levels 8 H20 molecules 25 glucose molecules 2 H20 molecules Low CO2 levels 5 glucose molecules 2 H20 molecules High protein levels 10 H20 molecules 10 H2O molecules Low protein levels 8 H20 molecules Osmosis Practice Activity he diffusion of water from an area of high concentration to an area of low concentration. ences below helow show the concentration of water and salt insidearrow_forwardFill in the blanks with the following words: diffusion, endocytosis, solute pump, osmosis. The type of active transport in which sodium and potassium are pumped across a membrane using ATP is called a This passive process is where water moves in and out of a cell The type of passive process in which molecules move across the plasma membrane down a concentration gradient is called This process is where the cell engulfs extracellular substances by phagocytosis or pinocytosisarrow_forwardDiscuss the five ways substances can pass across the cell membrane. Give examples of eacharrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license