Review for test

What does “high concentration area” mean?

• Spread out
• Tightly packed together
• Uncrowded
• Spacious

What process occurs when WATER diffuses across a membrane?

• endocytosis
• mitosis
• osmosis
• nuclear fission 

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of ___________.

• osmosis
• equilibrium
• diffusion
• hypertonic

What does selectively-permeable mean?

• Allow certain things to enter and leave the cell

• Nothing gets through

• The cell lets only large substances through

Which way will the water molecules move during osmosis?

• Out of the cell, so the cell shrinks.
• Out of the cell, so the cell swells.
• Into the cell, so the cell shrinks.
• Into the cell, so the cell swells.

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

During osmosis

• water moves from high to low concentration
• large or oddly shaped molecules move across a cell membrane
• water moves when energy is used
• proteins are built

Passive transport requires ________________

• concentration gradients

• no energy

• motion

• energy

Endocytosis / exocytosis is when vesicles release material from the cell.

• Endocytosis

• Exocytosis

Answer explanation

Exocytosis is when vesicles release, or removing, material OUT of the cell.

ALl of the following are types of passive transport EXCEPT -

• Simple Diffusion

• Osmosis

• Endocytosis

• Facilitated Diffustion