To explain: The way in which osmosis is different from the simple diffusion of molecular oxygen (O2) across a membrane.
Introduction: Cell is the basic “fundamental unit” of life. Every organism is composed of a cell. Cells perform cellular activities to maintain their normal functioning. One such important cellular activity is transportation. The process of carrying molecules, gases, organic substances and ions from one part to another part of the cell is termed as transportation. Osmosis and diffusion are different ways of transportation in the cell.
To explain: The way in which osmosis is similar to the simple diffusion.
Introduction: Cell is the basic “fundamental unit” of life. Every organism is composed of a cell. Cells perform cellular activities to maintain their normal functioning. One such important cellular activity is transportation. The process of carrying molecules, gases, organic substances and ions from one part to another part of the cell is termed as transportation. Osmosis and diffusion are different ways of transportation in the cell.
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Becker's World of the Cell (9th Edition)
- Why does osmosis occur?arrow_forwardBelow are listed molecules with different chemical characteristics. Knowing that all molecules will eventually diffuse across a phospholipid bilayer, select the list that most accurately predicts the relative rates of diffusion of these molecules (fastest to slowest) across a biological membrane. alanine, propanol, sodium, estrogen sodium, propanol, alanine, estrogen estrogen, propanol, sodium, alanine estrogen, propanol, alanine, sodiumarrow_forwardWhat do diffusion and osmosis have in common? How are they different from active transport? In the nervous system, where can you find examples of each of these?arrow_forward
- What two properties must a substance typically have to be capable of simple diffusion across a cell membrane? If a substance does not have these properties, can it still cross a cell membrane? How?arrow_forwardWhat is an example of facilitated diffusion and osmosis in the body?arrow_forward3)What is the second type of lipid that plays a major role in the plasma membrane? This lipid does not have polar and nonpolar regions (its not amphiphilic) but plays a critical role in membrane permeability. A)phospholipids b) steroid hormones c) Cholesterol 4)Which one of the following influences the rate at which diffusion can occur? Size of the concentration gradient Mass of the molecule Distance All of the above affect diffusion None of the above affect the diffusion ratearrow_forward
- The following table depicts the rate of transport of a molecule into a cell as the external concentrations are changed. Based on what you know about the characteristics of membrane transport, the molecule is most likely transported by: a) passive transport b) simple diffusion across the membrane c) facilitated diffusion d) active transportarrow_forwardWhat is unique about plasma membrane? Why is it advantageous for the plasma membrane to be fluid in nature? How does the sodium-potassium pump contribute to the net negative charge of the interior of the cell? In medicine, why is it important to administer only isotonic intravenous solutions to patients? Example of isotonic IV fluids are normal saline and lactated Ringer’s solution. Potassium is a necessary nutrient in order to maintain the function of our cells. What would occur to a person that is deficient in potassium?arrow_forwardFactors that affect the rate of diffusion through a membrane include all of the following EXCEPT: a)membrane surface area. b) molecular weight. c) availability of energy. d) steepness of concentration gradient.arrow_forward
- Glucose is a large molecule that cannot penetrate the phospholipid bilayer of cells. Instead, glucose enters most cells, such as red blood cells, through special carrier proteins embedded in the surface of the plasma membrane. In doing so, glucose moves from an area of high concentration to an area of low concentration. Based on this information, which term best describes the uptake of glucose by red blood cells? O Facilitated diffusion O Simple diffusion O Active transport O Osmosisarrow_forwardWhat is Reverse osmosis? How is it different from regular osmosis? what are its application?arrow_forwardWhat is meant by active transport across a cell membrane?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College