Q. Do fungi have small or large vacuoles?
Vacuoles in plant and fungi cells perform very similar functions, however; fungi cell vacuoles are typically much smaller than plant cell vacuoles, and each fungi cell can contain more than one vacuole (similar to animal cells).
Q. What do fungal cells contain?
Fungal cells differ from mammalian cells in that they have cell walls that are composed of chitin, glucans, mannans, and glycoproteins. Both mammalian and fungal cells have cell membranes; however, they differ in their lipid composition.
Q. What does the vacuole do in a fungi cell?
The fungal vacuole is a large, membrane-bounded organelle that functions as a reservoir for the storage of small molecules (including polyphosphate, amino acids, several divalent cations (e.g. calcium), other ions, and other small molecules) as well as being the primary compartment for degradation.
Q. Which of the following is the main function of contractile vacuole?
Circulation. Hint: contractile vacuole is an organelle which helps in expelling the excess water from the cell and protects the cell from excessive expansion. The function of contractile vacuole occurs in a periodic cycle by collecting water, it expands, and while releasing the water, it contracts.
Q. Why contractile vacuoles are important?
Contractile vacuoles protect a cell from absorbing too much water and potentially exploding by excreting excess water. Wastes, such as ammonia, are soluble in water; they are excreted from the cell along with excess water by the contractile vacuoles.
Q. What happens if contractile vacuole is absent in amoeba?
In freshwater amoeba, the contractile vacuole is necessary because freshwater has a lower concentration of solutes than the amoeba’s own internal fluids. So if the contractile vacuole is absent in freshwater amoeba then the cell will fill with excess of water and eventually burst out.
Q. What will happen if contractile vacuole is absent in amoeba give two points?
Even if the contractile vacuole is absent, the amoeba may burst. As osmotic pressure is to be maintained, to manage pressure in amoeba.
Q. What conditions cause a contractile vacuole to fill with water?
The contractile vacuole is a specialized type of vacuole that regulates the quantity of water inside a cell. In freshwater environments, the concentration of solutes is hypotonic, lesser outside than inside the cell. Under these conditions, osmosis causes water to accumulate in the cell from the external environment.
Q. Which one of the following is related to contractile vacuole?
Osmoregulation is a transport mechanism which takes place in unicellular protist. It helps to maintain the osmotic pressure inside the cell. In amoeba, there is a contractile vacuole present.
