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of millions of small balloons. These are the hydrophilic heads of the (1) molecules that make up most of the membrane surface. Through the transparent surface, you can see their flexible, (2)_ interior of the cell membrane, and beyond them an inner layer of (3)_ molecules with their tails pointing toward you. Here, there are (4)_ embedded on the cell membrane; some rest lightly on the surface, but most project all the way into the interior of the cell. The cell membrane is indeed a (5)_ mosaic, the proteins are embedded like the pieces of a picture, but you can see that they are free to move around. You push on one of the proteins, and it bobs like an iceberg. Some of the phospholipids and proteins have (6)_ which serve as an effective interaction with the aqueous environment that surrounds the cell. You notice that one of the proteins has a dimple in its surface. Just then a minute, plump molecule floating in the blood plasma installs in a depression of a protein. The molecule is a hormone, a chemical signal, and the dimpled protein is the (7) tails projecting inward toward the proteins attached to them that enables the cell to respond to it. In your light beam, you can see the sparkle and shimmer of many molecules, large and small, in the blood and pass through the cell membrane. You see that the transparent gas of oxygen is moving from the plasma and enters the cell interior. This movement is (8). called (9) down its (10)_ concentrated, to the blood, where it is (12)_ ; which it occurs through biological membrane, it is transport. Similarly, carbon dioxide is flowing out of the cell, gradient, from the cell interior, where it is (11)_ concentrated. You note that water molecules are passing through the cell membrane equally a both directions. The total concentration of solutes in the cell and in the blood must ali the solution must be (13)_ You signal the control team to inject a

of millions of small balloons. These are the hydrophilic heads of the (1) molecules that make up most of the membrane surface. Through the transparent surface, you can see their flexible, (2)_ interior of the cell membrane, and beyond them an inner layer of (3)_ molecules with their tails pointing toward you. Here, there are (4)_ embedded on the cell membrane; some rest lightly on the surface, but most project all the way into the interior of the cell. The cell membrane is indeed a (5)_ mosaic, the proteins are embedded like the pieces of a picture, but you can see that they are free to move around. You push on one of the proteins, and it bobs like an iceberg. Some of the phospholipids and proteins have (6)_ which serve as an effective interaction with the aqueous environment that surrounds the cell. You notice that one of the proteins has a dimple in its surface. Just then a minute, plump molecule floating in the blood plasma installs in a depression of a protein. The molecule is a hormone, a chemical signal, and the dimpled protein is the (7) tails projecting inward toward the proteins attached to them that enables the cell to respond to it. In your light beam, you can see the sparkle and shimmer of many molecules, large and small, in the blood and pass through the cell membrane. You see that the transparent gas of oxygen is moving from the plasma and enters the cell interior. This movement is (8). called (9) down its (10)_ concentrated, to the blood, where it is (12)_ ; which it occurs through biological membrane, it is transport. Similarly, carbon dioxide is flowing out of the cell, gradient, from the cell interior, where it is (11)_ concentrated. You note that water molecules are passing through the cell membrane equally a both directions. The total concentration of solutes in the cell and in the blood must ali the solution must be (13)_ You signal the control team to inject a

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Your first mission as a Bionaut requires you to enter a blood vessel and observe the structure and functions of the cell membranes. You step into the wet - filled chamber of the microtron, which quickly shrinks you to a size much smaller than a red blood cell. Through the tunnel - like needle of a syringe, you fall suddenly and uncontrollably enter in a blood vessel in the arm of a volunteer. You continuously float together with large, bouncy, and elastic red blood cells until you notice that the liquid turns to yellow in color. You know that you have reached already the blood plasma, so you switch on your headlamp and observe the cells of the epithelial tissues that line the wall of the blood vessel. Their cell mermbranes seem to be made of millions of small balloons. These are the hydrophilic heads of the (1) molecules that make up most of the membrane surface. Through the transparent surface, you can see their flexible, (2)_ interior of the cell membrane, and beyond them an inner layer of (3)_ molecules with their tails pointing toward you. Here, there are (4). embedded on the cell membrane; some rest lightly on the surface, but most project all the way into the interior of the cell. The cell membrane is indeed a (5). mosaic, the proteins are embedded like the pieces of a picture, but you can see that they are free to move around. You push on one of the proteins, and it bobs like an iceberg. Some of the phospholipids and proteins have (6)_ which serve as an effective interaction with the aqueous environment that surrounds the cell. You notice that one of the proteins has a dimple in its surface. Just then a minute, plump molecule floating in the blood plasma installs in a depression of a protein. The molecule is a hormone, a chemical signal, and the dimpled protein is the (7). tails projecting inward toward the proteins attached to them that enables the cell to respond to it. In your light beam, you can see the sparkle and shimmer of many molecules, large and small, in the blood and pass through the cell membrane. You see that the transparent gas of oxygen is moving from the plasma and enters the cell interior. This movement is (8)_ called (9). down its (10)_ L; which it occurs through biological membrane, it is transport. Similarly, carbon dioxide is flowing out of the cell, gradient, from the cell interior, where it is (11). concentrated. concentrated, to the blood, where it is (12)_ in both directions. The total concentration of solutes in the cell and in the blood must You signal the control team to inject a You note that water molecules are passing through the cell membrane equally be equal; the solution must be (13)
Transcribed Image Text:Your first mission as a Bionaut requires you to enter a blood vessel and observe the structure and functions of the cell membranes. You step into the wet - filled chamber of the microtron, which quickly shrinks you to a size much smaller than a red blood cell. Through the tunnel - like needle of a syringe, you fall suddenly and uncontrollably enter in a blood vessel in the arm of a volunteer. You continuously float together with large, bouncy, and elastic red blood cells until you notice that the liquid turns to yellow in color. You know that you have reached already the blood plasma, so you switch on your headlamp and observe the cells of the epithelial tissues that line the wall of the blood vessel. Their cell mermbranes seem to be made of millions of small balloons. These are the hydrophilic heads of the (1) molecules that make up most of the membrane surface. Through the transparent surface, you can see their flexible, (2)_ interior of the cell membrane, and beyond them an inner layer of (3)_ molecules with their tails pointing toward you. Here, there are (4). embedded on the cell membrane; some rest lightly on the surface, but most project all the way into the interior of the cell. The cell membrane is indeed a (5). mosaic, the proteins are embedded like the pieces of a picture, but you can see that they are free to move around. You push on one of the proteins, and it bobs like an iceberg. Some of the phospholipids and proteins have (6)_ which serve as an effective interaction with the aqueous environment that surrounds the cell. You notice that one of the proteins has a dimple in its surface. Just then a minute, plump molecule floating in the blood plasma installs in a depression of a protein. The molecule is a hormone, a chemical signal, and the dimpled protein is the (7). tails projecting inward toward the proteins attached to them that enables the cell to respond to it. In your light beam, you can see the sparkle and shimmer of many molecules, large and small, in the blood and pass through the cell membrane. You see that the transparent gas of oxygen is moving from the plasma and enters the cell interior. This movement is (8)_ called (9). down its (10)_ L; which it occurs through biological membrane, it is transport. Similarly, carbon dioxide is flowing out of the cell, gradient, from the cell interior, where it is (11). concentrated. concentrated, to the blood, where it is (12)_ in both directions. The total concentration of solutes in the cell and in the blood must You signal the control team to inject a You note that water molecules are passing through the cell membrane equally be equal; the solution must be (13)
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