Means of Transport

Q. Which of the following is permeable to all substances?

1. Cell wall
2. Cell membrane
3. Plasma membrane
4. None of these

Q. The image shown below is the movement of molecule A across the plasma membrane by facilitated diffusion. The type of facilitated diffusion shown in the image is

1. symport
2. uniport
3. antiport
4. simple diffusion

Q.

The movement of molecules across membrane independent of other molecule is called:

1. Symport

2. Cotransport

3. Antiport

4. Uniport

Q. Which of the following criteria does not pertain to facilitated transport?

1. Requirement of special membrane proteins
2. Transport saturation
3. High selectivity
4. Uphill transport

Q.

Processes that do not require energy for movement of particles are

1. diffusion and free transport

2. osmosis and active transport

3. diffusion and osmosis

4. all of them

Q. There is a high demand for water in plants. Identify the option(s) that support(s) this statement.
1. A watermelon contains over 92% water.
2. A corn plant absorbs almost 3 litres of water in a day.
3. A mustard plant absorbs water equal to its own weight in 5 hours.

1. 1 & 2
2. 2 & 3
3. 1, 2, & 3
4. 1 alone

Q. Match the type of transport with the direction at which it facilitates the movement of two solute molecules.

1. Same direction
2. Opposite direction
3. Independent movement

Q. Membrane proteins are responsible for

1. passive transport
2. active transport
3. transport of water
4. all of these

Q. Label the type of transport.

1. Antiport
2. Symport
3. Uniport