Question

some one pls help me i really need the answer
what changes do you observe in the following situation
(a) when the plasma membrane of a cell get damaged
(b)when we placed a plant cell in a hypertonic solution
(c) when golgi apparatus are removed from the cell
(d)when we placed animal cell in a hypotonic solution
(e)rheo leaves are boiled in water first and then placed in a hypotonic solution
pls..................help me fast

Answer 1

a) The human cell is enveloped in a thin, pliable, elastic structure called the cell membrane or the plasma membrane and is only 7.5 to 10 nanometers thick. It is composed almost entirely of proteins and lipids.  There are approximately 5 × 106 lipid molecules in a 1 μm × 1 μm area of lipid bilayer, or about 109 lipid molecules in the plasma membrane of a human cell.

b) If a plant cell is placed in a hypertonic solution, the plant cell loses water and hence turgor pressure by plasmolysis: pressure decreases to the point where the protoplasm of the cell peels away from the cell wall, leaving gaps between the cell wall and the membrane and making the plant cellshrink and crumple.

c) The Golgi apparatus is necessary for cell life. The Golgi body ... to become digested. Autolysis is vital because it allows for an organism to remove worn-out cells.

d) When the plant cell is placed in ahypotonic solution , it takes up water by osmosis and starts to swell, but thecell wall prevents it from bursting. The plant cell is said to have become "turgid" i.e. swollen and hard. The pressure inside the cell rises until this internal pressure is equal to the pressure outside.

e) When rheo leaves will be boiled, it will shrink due to high temperature. ... Boiling Shall kill the rheo leaves and cells will be dead. ... If a drop of sugar syrup is added nothing will happen as fluid cannot pass through dead cell membrane.
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Answer 2

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