Define hypotonic, hypertonic, and isotonic. What would be the fate of an animal cell immersed in

step 1 Let's pretend that these three red circles represent blood cells in an animal cell, like a human

Define hypotonic, hypertonic, and isotonic. What would be...

Key Concepts

Isotonic Solution

An isotonic solution has an equal concentration of solutes as found inside the cell, resulting in no net movement of water across the cell membrane. This balance maintains the cell’s normal shape and function without causing swelling or shrinking.

Hypertonic Solution

A hypertonic solution contains a higher concentration of solutes than the inside of a cell. Immersion of a cell in a hypertonic solution leads to water leaving the cell by osmosis, causing the cell to shrink or undergo crenation.

Osmosis

Osmosis is the passive movement of water molecules through a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. This process is critical in cell biology as it drives the water balance across the cell membrane and is the underlying mechanism by which cells either gain or lose water in different environments.

Tonicity

Tonicity refers to the relative concentration of solutes in the solution surrounding a cell compared to the cell’s interior. It determines the direction and extent of water movement across the cell membrane, thereby influencing whether a cell will swell, shrink, or maintain its normal volume.

Hypotonic Solution

A hypotonic solution has a lower concentration of solutes compared to the cell’s interior. When a cell is immersed in such a solution, water enters the cell by osmosis, which can cause the cell to swell and potentially burst if the influx is excessive.

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