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The Death of Abdulla the Camel Driver
Introduction: Before we explore the conditions surrounding Abdulla’s death, let’s review some basic facts. We define diffusion as movement of materials from a region of higher concentration to a region of lower concentration. This movement is due to kinetic energy of particles. An example of this can be observed by opening a bottle of perfume. Soon you will smell the perfume in distant parts of the room. It diffuses from the high concentration of molecules in the bottle to a lower concentration of molecules in the air. Osmosis is a type of diffusion. It involves movement of water through a differentially permeable membrane from a region of high concentration (of water molecules) to a region of lower concentration (of water molecules). We define 3 types of solutions based upon osmotic activity. In an isotonic solution, the solute concentration is the same on both sides of the membrane so there is no net movement of water. ( See Figure 1)
In a hypotonic solution, solute concentration is higher inside the cell than outside. So water moves from a high concentration outside the cell to a lower concentration inside the cell. The cell swells and may burst from the excess water. This is what occurs when we soak salad ingredients in ice water to make them crisp! (See Figure 2)
Figure 2: Effects of a Hypotonic Solution.
In a hypertonic solution, the solute concentration is higher outside than inside the cell so water moves outward from the high concentration (of water) inside the cell to the lower concentration (of water) outside the cell. Thus the cell shrinks! (See Figure 3)
Figure 3. Effects of A Hypertonic Solution.
Case Study: Abdulla the camel driver lost his way in the desert . After several days of wandering with his trusty camel Clyde, he found himself on a beach. He carefully searched the area for a spring but found no fresh
Introduction: Before we explore the conditions surrounding Abdulla’s death, let’s review some basic facts. We define diffusion as movement of materials from a region of higher concentration to a region of lower concentration. This movement is due to kinetic energy of particles. An example of this can be observed by opening a bottle of perfume. Soon you will smell the perfume in distant parts of the room. It diffuses from the high concentration of molecules in the bottle to a lower concentration of molecules in the air. Osmosis is a type of diffusion. It involves movement of water through a differentially permeable membrane from a region of high concentration (of water molecules) to a region of lower concentration (of water molecules). We define 3 types of solutions based upon osmotic activity. In an isotonic solution, the solute concentration is the same on both sides of the membrane so there is no net movement of water. ( See Figure 1)
In a hypotonic solution, solute concentration is higher inside the cell than outside. So water moves from a high concentration outside the cell to a lower concentration inside the cell. The cell swells and may burst from the excess water. This is what occurs when we soak salad ingredients in ice water to make them crisp! (See Figure 2)
Figure 2: Effects of a Hypotonic Solution.
In a hypertonic solution, the solute concentration is higher outside than inside the cell so water moves outward from the high concentration (of water) inside the cell to the lower concentration (of water) outside the cell. Thus the cell shrinks! (See Figure 3)
Figure 3. Effects of A Hypertonic Solution.
Case Study: Abdulla the camel driver lost his way in the desert . After several days of wandering with his trusty camel Clyde, he found himself on a beach. He carefully searched the area for a spring but found no fresh