Cell Transport

This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.

• vacuole
• nucleus
• cell membrane
• cell wall

True or False? Passive Transport does not require energy

• true

• false

Movement of particles from high to low concentration. 

• Passive Transport
• Active Transport

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Type of cell transport that uses ATP (energy)

• Passive Transport

• Active Transport

Which is true about active transport?

• it moves material from low to high concentration

• it does not require energy

• it moves material from high to low concentration

What process occurs when WATER diffuses across a membrane?

• endocytosis
• mitosis
• osmosis
• nuclear fission 

What does “high concentration area” mean?

• Spread out
• Tightly packed together
• Uncrowded
• Spacious

When particles move from areas of high concentration to areas less concentrated, this has taken place.

• diffusion
• mitosis
• endocytosis
• photosynthesis

What does selectively-permeable mean?

• The cell controls what passes in and out of the cell
• Nothing gets through
• The cell lets only large substances through