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Questions and Answers
Which of the following is true about vacuoles?
Which of the following is true about vacuoles?
- They are bounded by a semi permeable membrane. (correct)
- They are found in the nucleus.
- They are primarily involved in protein synthesis.
- They contain genetic material.
In which organism does the contractile vacuole help in excretion?
In which organism does the contractile vacuole help in excretion?
- Euglena
- Paramecium
- Volvox
- Amoeba (correct)
What percentage of the cell volume do vacuoles typically occupy?
What percentage of the cell volume do vacuoles typically occupy?
- 25%
- 90% (correct)
- 50%
- 75%
Which type of vacuole is responsible for storing food in cells?
Which type of vacuole is responsible for storing food in cells?
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Which of the following statements is NOT true about vacuoles?
Which of the following statements is NOT true about vacuoles?
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Study Notes
Vacuole
- A membrane-bound space in the cytoplasm that stores cell materials that are not useful to the cell.
- Vacuoles are secondary products, implying they are formed from other cellular components.
- Water is typically stored in vacuoles, making them a safe storage space.
- Vacuoles occupy a significant 90% of the cell's volume.
- They are bounded by a semi-permeable membrane, allowing for selective passage of substances.
- The concentration of vacuoles in transportation is significantly higher than in the cytoplasm.
Types of Vacuoles
-
Contractile Vacuole
- Found in amoeba, where they aid in excretion.
-
Food Vacuole
-
Sap Vacuole
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