Question

What is the membrane that surrounds the vacuole?

Answer 1

Hint: Cell organelles are various organelles that are present in the cell and are responsible for different biological processes. The cell organelles may or may not be bounded by a limiting membrane. On the basis of presence of membrane, the cell organelles can be either membrane bound organelles or non-membranous bound organelles.

Complete answer:
The eukaryotic cell contains various types of cell organelles. Some of the cell organelles are bound by membrane while others are not. The vacuole is a membrane bound organelle. It is found in animals as well as plant cells. They are also found in some bacterial cells and protists.
Vacuoles are defined as enclosed compartments that are filled with water with water and contain inorganic and organic molecules. Vacuoles also contain enzymes in solution. The vacuoles are formed by fusion of a number of membrane vesicles. Vacuoles can be called as the larger form of the membrane vesicle.
In plant cells, a vacuole is surrounded by a membrane which is known as the tonoplast. It is also known as the vacuolar membrane. Tonoplast can be referred to the cytoplasmic membrane surrounding a vacuole. It separates the contents of vacuole from the outer environments. It also acts as an important barrier that separates the vacuole from the cytoplasmic contents.
The tonoplast is mainly associated with regulation of the movements of the ions around the cell. It also helps in separating the harmful toxin materials from the cytoplasm that might be harmful to the environment of the cell. The proteins that are found in the tonoplast are known as aquaporins. They are associated with the control of the flow of water inside and outside of the membrane.

Additional information:
The movement of the water as well as the solutes takes place through the process of active transportation. THe pumping of the potassium ions inside and towards the inside takes place through the process of active transportation. The contents of the vacuoles are maintained through the turgor pressure and the tonoplast helps to balance the turgor pressure.

Note: The tonoplast is the membrane that surrounds the vacuole and it serves to separate the different contents of the vacuole from the other components of the cytoplasm. The tonoplast also acts to delimit the toxins and other harmful materials from the cell cytoplasm.