Vacuoles in Bacteria

Q. Which of the following statements is false with regard to gas vacuoles?

1. The inflation and deflation of the gas vesicles is coordinated with the light.
2. Gas vacuoles are protein-bound structures containing air that allow the bacteria to control their buoyancy.
3. Gas vacuoles are protein-bound structures containing water that allow the bacteria to control their buoyancy.
4. Gas vacuoles are found in many aquatic bacteria like cyanobacteria.

Q.

Name excretory organ in amoeba.

Q.

How does amoeba remove waste?

Q.

Question 18

What are gas vacuoles? State their functions.

Q. Which of the following is responsible for excretion in Amoeba?

1. Tonoplast
2. Contractile vacuole
3. Food vacuole
4. Lysosome

Q. Which of the following vacuole is not correctly matched with its function:

1. Central vacuole - Helps to remove water from the cell
2. Contractile vacuole - Helps to maintain the shape of the cell
3. Food vacuole - To store nutrients.
4. Gas vacuole - to store gas which will help the cell to be buoyant.

Q.

Amoeba removes its metabolic wastes by _______.

Q. What is a tonoplast?

1. Outer membrane of mitochondria
2. Inner membrane of chloroplast
3. Cell membrane of a plant cell
4. Membrane boundary of the vacuole of plant cells

Q. Which of the following is responsible for excretion in Amoeba?

1. Lysosome
2. Tonoplast
3. Contractile vacuole
4. Food vacuole

Q.

Which of the following is not a function of the vacuole in a plant cell?

1. Cell elongation and protection
2. Waste disposal
3. Production of hydrogen peroxide
4. Storage

Q. Tonoplast, a differentially permeable membrane surrounds

1. Lysosome
2. Nucleus
3. Vacuole
4. Cytoplasm

Q. Which of the following vacuole is not correctly matched with its function:

1. Central vacuole - Helps to remove water from the cell
2. Contractile vacuole - Helps to maintain the shape of the cell
3. Food vacuole - To store nutrients.
4. Gas vacuole - to store gas which will help the cell to be buoyant.

Q. The fluid containing mineral salts and water enclosed in a vacuole of a cell is called

1. Cytoplasm
2. Nucleoplasm
3. Cell sap
4. Tonoplast

Q. what is the difference b/w Lysosome, Vacuole & Vesicles?

Q. Most of the water found in the young cell occurs in

1. Cell wall
2. Nucleus
3. Cytoplasm
4. Vacuoles

Q. I. It is a membrane bound space found in cytoplasm
II. It is bound by a single membrane called tonoplast
III. It contains watery sap, excretory products and other materials not useful to cell
IV. It has higher concentration of sap than the cytoplasm.
The above statements apply to

1. Golgi apparatus
2. Lysosomes
3. Mesosomes.
4. Vacuoles
5. Endoplasmic reticulum

Q. Vacuoles in cyanobacteria help the cells float in water by

1. absorbing water from the surroundings
2. expelling water out of the cell
3. storing gas inside
4. storing special enzymes for floating