(855) 4-ESSAYS

Type a new keyword(s) and press Enter to search

Osmosis

            
            
            
             The movement of water molecules from a high concentration of water molecules to a lower concentration of water molecules through a partially permeable membrane is called Osmosis. .
             Under normal conditions, the concentration of water molecules and salts is the same in both cells and plasma. After sweating, water and salts are lost from the plasma and there is a lower concentration of water in the plasma than inside the cells. Water molecules therefore diffuse out from the cells through the cell membrane. We call a membrane like this partially permeable. Water molecules are small, so they pass through the membrane much more easily than salts. .
             Diagram:.
             .
             There are several different types of cells in xylem but the one that transports most water and minerals to the leaves are called xylem vessels. These are formed from dead xylem cells whose end walls have broken down. These form continuous tubes. The xylem vessels act like pipes in transporting water up the plant. Wood is made up of xylem cells; most xylem cells have substances in their walls which strengthen the cells. This is why wood is a strong material. .
             Osmosis in plants.
             The root hairs together increase the surface area of the root. This enables water and mineral ions to be absorbed more quickly. The soil solution is water containing low concentrations of mineral ions. This is a dilute solution. The cytoplasm and the vacuole .
             .
             of the root hair cell contain a higher concentration of mineral ions, than the soil solution. Water molecules move from the soil solution to the cytoplasm and vacuole of the cell by osmosis.
             Leaves normally contain a lot of water, so water will evaporate from them in exactly the same way that a wet shirt dries on a washing line. Evaporation of water from a leaf surface is called transpiration. If plants lose too much water by transpiration, the leaves droop. This drooping is called wilting. Most of the cells in the leaf are supported by being full of water.


Essays Related to Osmosis

1. Osmosis

Osmosis Aim: - To investigate the factors that effect the osmosis in potatoes. Introduction: - Osmosis is the movement of water through a semi permeable membrane, separating solutions of different concentrations. ... If you put a plant cell in water, water enters by Osmosis, then swells up. ... This will allow us to see whether osmosis has taken place, and to what extent. ... Preliminary Experiment: - In this preliminary experiment I will investigate the factors that affect the osmosis in potatoes. ...

  • Word Count: 2752
  • Approx Pages: 11
  • Grade Level: High School

2. osmosis

Through this procedure, the results and the process helped to under what osmosis does in aiding the cell. ... The diffusion of water into and out of a selectively permeable membrane is called osmosis. ... Osmosis does not occur in an isotonic solution. ... After you record you record your data,that would conclude your osmosis lab. ... This graph maps the difference of a group and the class mass change during osmosis. ...

  • Word Count: 1585
  • Approx Pages: 6
  • Grade Level: High School

3. Osmosis

I am going to investigate how the concentration of a sucrose solution affects osmosis in potato cells. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. Hypothesis: Osmosis is defined as the net movement of water or any other solution's molecules from a region in which they are highly concentrated to a region in which they are less concentrated. ... Some other Factors that effect osmosis are the: Temperature Surface area Time spent in the solution The shape and size of the potato used ...

  • Word Count: 283
  • Approx Pages: 1
  • Grade Level: High School

4. Osmosis

Osmosis Osmosis is a kind of diffusion which only occurs with water. With osmosis, there is a membrane which does not allow dissolved material to pass though it but only water (selectively permeable) Osmosis is the movement of water molecules from a weak solution to a strong solution. Osmosis occurs when water is taken up e.g. ... ato cells by osmosis. ... This liquid or hydrostatic pressure works against osmosis. ...

  • Word Count: 17599
  • Approx Pages: 70
  • Grade Level: High School

5. Osmosis

The function of the contractile vacuoles is to pump water out of the cell caused by osmosis. ... This process is known as osmosis because the higher concentration that surrounds the Paramecium is moving itself to the lower concentration inside the Paramecium. 4. According to the laws of osmosis the plant cells should have exploded. ...

  • Word Count: 512
  • Approx Pages: 2
  • Grade Level: High School

6. Investigating Osmosis

Investigating Osmosis Prediction Osmosis is defined as the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration. ... The greater the concentration of water in the external solution the greater the amount of water that enters the cell by osmosis. ... At this point there will be no change in the length, volume and mass of the potato, as the net movement of water will be zero, no osmosis has occurred. ... At point A the graph suggests that no osmosis has occurred, suggesting that the concentration...

  • Word Count: 970
  • Approx Pages: 4
  • Grade Level: High School

7. Cell Membranes - Diffusion and Osmosis

The overall result of osmosis is that water goes in the cell and the cell is expected to swell up. An example of osmosis in plants would be the absorption of water by the roots of plants. In animals, osmosis affects the supply of nutrients and the release of metabolic waste products. ... This lab was about diffusion and osmosis, in this lab we tried to organize the experiment the best we could. ... Conclusion This lab was about diffusion and osmosis, in this lab we conducted the experiment about how diffusion and osmosis work. ...

  • Word Count: 779
  • Approx Pages: 3
  • Grade Level: Undergraduate

8. Semi-Permeable Plasma Membrane - Undergoing Diffusion

Key Words: semi-permeable, membrane, diffusion, osmosis, concentration gradient, homeostasis, isotonic, hypotonic, hypertonic Introduction The dependence of life processes on diffusion mechanisms could not be more prevalent. ... The spontaneous net movement of water across a semipermeable membrane from a region of low solute concentration to a solution with a high solute concentration, down a solute concentration gradient is known as osmosis. Osmosis allows cells to regulate the amount of water within their membrane in order to keep from shrinking or swelling (Glencoe/McGraw-Hill, 2006, p. 83...

  • Word Count: 1659
  • Approx Pages: 7
  • Has Bibliography
  • Grade Level: High School

9. Diffusion and Osmosis Lab

Discussion and Conclusion Introduction: Background Information In the permeability lab, I gained an understanding of the principles of diffusion and osmosis. ... Osmosis is the diffusion of water through a selectively permeable membrane from a region in which it is highly concentrated to an area that has a lower concentration. ... Osmosis is important because it helps distribute nutrients and discharge metabolic waste products. ... Without osmosis, organelles would have a hard time carrying out duties; such like distribution of minerals and releasing waste. ... Discussion and Conclusion The p...

  • Word Count: 1725
  • Approx Pages: 7
  • Grade Level: High School

Got a writing question? Ask our professional writer!
Submit My Question