Which structure is responsible for maintaining the amount of water in amoeba?

The correct answer is Contractile vacuole.

Key Points

• An amoeba, also known as an amoeboid, is a unicellular organism having the capacity to change its shape, typically through extending and retracting pseudopods.
• Osmoregulation in protists and unicellular algae is carried out by an organelle known as a contractile vacuole, sometimes referred to as a pulsatile or pulsating vacuole.
• Amoeba has contractile vacuoles that aid in osmoregulation by regulating water balance and controlling how much water a cell contains.
• The contractile vacuole functions as a component of a defence mechanism that stops the cell from absorbing an excessive amount of water and enables lysing due to an excessive amount of internal pressure.

Additional Information

• Having a digestive role, the food vacuole is a membrane-enclosed sac. Unicellular protozoans including amoebas, plasmodium, and others contain it.
• By digesting the food that has been consumed, food vacuoles function as an intracellular stomach. Digestive enzymes in it help break down the meal so that it can be used by the body and then released into the cytoplasm.
• Cytoplasm is the name given to the substance that fills up the cells. It includes additional organelles suspended in the cytosol as well as filaments, ions, proteins, and macromolecular structures in the cytosol of the cell.
• Cells' ability to maintain their turgidity, which allows them to hold their shape, is one of the fundamental roles played by cytoplasm.
• A flexible, lipid bilayer called the plasma membrane encloses and shields the cell's cytoplasm.
• Between the interior organelles of the cell and the external environment, the plasma membrane serves as a physical barrier. It is a selectively permeable membrane, allowing only a limited number of molecules to enter and exit the cell.