Diffusion

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

Why do large multicellular organisms need transport systems while simple unicellular organisms do not?

• Large organisms have a much smaller surface area to volume ratio compared to smaller ones.

• Diffusion does not work in large multicellular organisms.

• Unicellular organisms have a much smaller surface area to volume ratio than multicellular organisms.

the movement of particles from an area of high concentration to an area of low concentration

• diffusion

• infusion

• solution

• active transport

the substance that is being dissolved for example, salt or sugar

• solution

• solute

• solvent

The amount of particles in an area is know as

• mutation

• constant

• isolation

• concentration

A cell does not need to use energy during

• active transport

• passive trasport

Passive transport occurs when small particles move from

• areas of lower to areas of higher concentration.

• inside a cell to outside a cell.

• areas of higher to areas of lower concentration.

• outside a cell to inside a cell.

A cell moving particles with the use of energy is called

• passive transport.

• active transport.

• osmosis.

• endocytosis.

• the salt solution has a lower water potential than the potato cells

• the salt solution has a higher water potential than the potato cells

• the salt solution has a lower water potential thank the potato cells

• the salt solution has a higher water potential than the potato cells.