B1 - Transport and Organisation - Richard James | Laabri

1

Select the best definition of diffusion.

Active movement of substances from an area of low concentration to high concentration.

Passive movement of substances from an area of high concnetration to low concentration.

Movement of water through a partially permeable membrane.

1

Diffusion is a passive process. What does passive mean?

Requires energy.

Does not require additional energy.

Must pass through a membrane.

1

Diffusion eventually reaches equilibrium. Define 'equilibrium'

The particles are all grouped together and have stopped moving.

The particles have evenly spread out and stopped moving.

The particles have evenly spread out but are still moving around.

1

What effect will increasing the temperature have on the rate of diffusion?

No effect

Speeds up diffusion

Slows down diffusion

1

The greater the difference in concentration the faster/slower diffusion occurs.

Faster

Slower

1

Select the best definition of osmosis

Active movement of substances from an area of low concentration to high concentration.

Passive movement of substances from an area of high concnetration to low concentration.

Movement of water through a partially permeable membrane.

1

Osmosis moves from a _ concentration of water to a ___ concentration of water.

High --> Low

Low --> High

1

When water moves into a plant cell...

they become hard and turgid.

they shrink and become flaccid

they swell up and pop

1

Select the best definition of active transport

Active movement of substances from an area of low concentration to high concentration, through a partially permeable membrane.

Passive movement of substances from an area of high concnetration to low concentration.

Movement of water through a partially permeable membrane.

1

Plant root hair cells use active transport to absorb what from the soil?

Oxygen

Water

Carbon Dioxide

Mineral ions

1

Where does the energy for active transport come from?

Respiration in the ribosomes

Respiration in the mitochondria

Distillation in the mitochondria

Distillation in the ribosome

B1 - Transport and Organisation

B1 - Transport and Organisation

Select the best definition of diffusion.

Diffusion is a passive process. What does passive mean?

Diffusion eventually reaches equilibrium. Define 'equilibrium'

What effect will increasing the temperature have on the rate of diffusion?

The greater the difference in concentration the faster/slower diffusion occurs.

Select the best definition of osmosis

Osmosis moves from a _______ concentration of water to a _________ concentration of water.

When water moves into a plant cell...

Select the best definition of active transport

Plant root hair cells use active transport to absorb what from the soil?

Where does the energy for active transport come from?

Select the best definition of diffusion.

Diffusion is a passive process. What does passive mean?

Diffusion eventually reaches equilibrium. Define 'equilibrium'

What effect will increasing the temperature have on the rate of diffusion?

The greater the difference in concentration the faster/slower diffusion occurs.

Select the best definition of osmosis

Osmosis moves from a _______ concentration of water to a _________ concentration of water.

When water moves into a plant cell...

Select the best definition of active transport

Plant root hair cells use active transport to absorb what from the soil?

Where does the energy for active transport come from?

Osmosis moves from a _ concentration of water to a ___ concentration of water.

Osmosis moves from a _ concentration of water to a ___ concentration of water.