Osmosis

Q.

Is facilitated diffusion an example of active transport?

Q.

Transport of molecules occurs against the concentration gradient by using energy in ___ process.

Q.

Plasmolysis is the process in which cells lose water in a

1. Hypertonic solution.

2. Hypotonic solution

3. Isotonic solution

4. All of the above

Q. The membrane that allows some of the molecules to pass through it and prevent the others is called

1. permeable membrane
2. semipermeable membrane
3. selectively or differentially permeable membrane
4. impermeable membrane

Q. Which of the following processes does not require energy?

1. Osmosis
2. Diffusion
3. Passive transport
4. All of the above

Q. Exchange of substances between a cell and its environment can occur through

1. osmosis
2. diffusion
3. active transport
4. all of the above

Q.

What happens during osmosis?

Q. During endosmosis, the volume of solvent in the solution where it is taking place will

1. decrease
2. increase
3. remain constant
4. volume has no effect on osmosis

Q. The net direction and rate of osmosis depends on both the ‘X’ and ‘Y’. Identify ‘X’ and ‘Y’.

1. X - Solute potential; Y - Solvent
2. X - Pressure potential; Y - Matric potential
3. X - Matric potential; Y - Water potential
4. X - Pressure gradient; Y - Concentration gradient

Q. Diffusion of water across a semi-permeable membrane from an area of high concentration to an area of low concentration

1. Diffusion
2. Hypotonic
3. Hypertonic
4. Osmosis

Q. The process by which a solvent passes through a selectively or differentially permeable membrane in an opposite direction, when subjected to a pressure greater than the osmotic pressure is

1. simple diffusion
2. osmosis
3. reverse osmosis
4. facilitated diffusion

Q.

Plasmolysis is the process in which cells lose water in a

1. Hypertonic solution.

2. Hypotonic solution

3. Isotonic solution

4. All of the above

Q. Which of the following processes does not require energy?

1. Osmosis
2. Diffusion
3. Passive transport
4. All of the above