Question

what is osmosis ?????
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Answer 1

Answer:

Osmosis is a vital process in biological systems, as biological membranes are semipermeable. In general, these membranes are impermeable to large and polar molecules, such as ions, proteins, and polysaccharides, while being permeable to non-polar or hydrophobic molecules like lipids as well as to small molecules like oxygen, carbon dioxide, nitrogen, and nitric oxide. Permeability depends on solubility, charge, or chemistry, as well as solute size. (I don't know if this correct )

Answer 2

$\mathfrak{Answer}$

WHAT IS OSMOSIS?

Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane.

Any solvent can undergo the process of osmosis including gases and supercritical liquids.

OSMOTIC SOLUTIONS:-

There are three different types of solutions:

• Isotonic Solution
• Hypertonic Solution
• Hypotonic Solution

An isotonic solution is one that has the same concentration of solutes both inside and outside the cell.

A hypertonic solution is one that has a higher solute concentration outside the cell than inside.

A hypotonic solution is the one that has a higher solute concentration inside the cell than outside.

TYPES OF OSMOSIS:-

Osmosis is of two types:

• Endosmosis– When a substance is placed in a hypotonic solution, the solvent molecules move inside the cell and the cell becomes turgid or undergoes deplasmolysis. This is known as endosmosis.
• Exosmosis– When a substance is placed in a hypertonic solution, the solvent molecules move outside the cell and the cell becomes flaccid or undergoes plasmolysis. This is known as exosmosis.

OSMOTIC PRESSURE:-

Osmotic pressure is the pressure required to stop water from diffusing through a membrane by osmosis. It is determined by the concentration of the solute. Water diffuses into the area of higher concentration from the area of lower concentration. When the concentration of the substances in the two areas in contact is different, the substances will diffuse until the concentration is uniform throughout.

Osmotic pressure can be calculated using the equation:

Π=MRT

where Π denotes the osmotic pressure,

M is the molar concentration of the solute,

R is the gas constant,

T is the temperature

SIGNIFICANCE OF OSMOSIS:-

• Osmosis influences the transport of nutrients and the release of metabolic waste products.
• It is responsible for the absorption of water from the soil and conducting it to the upper parts of the plant through the xylem.
• It stabilizes the internal environment of a living organism by maintaining the balance between water and intercellular fluid levels.
• It maintains the turgidity of cells.
• It is a process by which plants maintain their water content despite the constant water loss due to transpiration.
• This process controls the cell to cell diffusion of water.
• Osmosis induces cell turgor which regulates the movement of plants and plant parts.
• Osmosis also controls the dehiscence of fruits and sporangia.
• Higher osmotic pressure protects the plants against drought injury.

hope it helpz