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WorksheetsDiffusion and Osmosis
Total questions: 10
Worksheet time: 5mins
What is diffusion?
The movement of particles from low concentration to high concentration
The movement of particles from high concentration to low concentration
Active movement of particles, requiring energy from respiration
Which process is responsible for gas exchange in the lungs?
Diffusion
Osmosis
Active Transport
Which organelle controls the movement of substances into and out of a cell?
Cell Wall
Cell Membrane
Nucleus
Mitochondria
What happens to the rate of diffusion as the temperature increases?
The rate of diffusion increases
The rate of diffusion decreases
The rate of diffusion stays the same
What is osmosis?
The overall movement of water, through a partially permeable membrane, from a region of low concentration to a region of high concentration
The overall movement of water, through a partially permeable membrane, from a region of high concentration to a region of low concentration
Which of the following factors does NOT have a direct influence on the rate of diffusion?
Molecule size
Temperature
Concentration gradient
Colour
True or false - Diffusion, including osmosis, is a passive process (meaning it does not require energy to happen).
True
False
Diffusion (including osmosis) are passive processes. What does that mean?
They don't really happen.
They require some energy to occur.
They require lots of energy to occur.
They don't require energy to occur.
What is a partially permeable membrane?
A membrane that all particles can pass through.
A membrane that only some particles can pass through.
A membrane that absorbs all particles.
A membrane that absorbs some particles.
What happens once equilibrium is reached?
Particles are spread equally and stop moving.
Particles are spread equally and continue to move but with 0 net movement.
