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Diffusion and osmosis...

Diffusion and osmosis

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### Step-by-Step Text Solution **Step 1: Definition of Diffusion and Osmosis** - **Diffusion** is the process by which molecules spread from an area of high concentration to an area of low concentration until they are evenly distributed. It can occur in solids, liquids, and gases. - **Osmosis** is a specific type of diffusion that refers to the movement of water molecules through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration. **Step 2: Medium of Occurrence** - **Diffusion** occurs in all mediums: solid, liquid, and gas. ...
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Knowledge Check

  • Which of the following statements is correct about diffusion and osmosis ? (i)In Osomosis, a semipermeable membrane is used while diffusion is without membrane . (ii) In osmosis, movement of molecules occurs in one direction while in diffusion, movement occurs in all directions (iii)In osmosis only the solvent moves while in diffusion both solute and solvent move

    A
    Only (i) and (ii)
    B
    Only (i)
    C
    Only (ii) and (iii)
    D
    (i) ,(ii) and (iii)

  • Osmosis is a special kind of diffusion, through which water diffuses across the cell membrane the rate and direction of osmosis depends upon

    A
    pressure gradient
    B
    concentration gradient
    C
    both `(a)`and `(b)`
    D
    none of these.

  • After oxygen diffusion into pulmonary capillaries, it diffuses into .......... and binds with ....

    A
    interstitial fluid, red blood cells
    B
    interstitial fluid, carbon dioxide
    C
    red blood cells, haemoglobin
    D
    red blood cells, carbon dioxide

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