Cell transport formative for 9/27+9/28

What would molecule D be?

• A protein.

• A phospholipid.

• A carbohydrate.

• A nucleic acid.

The process of diffusion causes molecules to move from (low to high or high to low) concentrations until a state of ____________________ is reached.

• equilibrium

• hypertonicity

• hypotonicity

• imbalance

The diffusion of water is known as __________________.

• osmosis

• facilitated diffusion

• active transport

• endocytosis

________________ uses proteins to bring materials into the cell from high to low concentration, requiring no cell energy.

• facilitated diffusion

• simple diffusion

• active transport

• endocytosis

Diffusion, osmosis and facilitated diffusion are all examples of _____________ transport, in which the cell does not need to use any energy.

• passive

• active

During active transport molecules move from an area of ___________ concentration to an area of ____________ concentration.

• high; low

• low; high

________________ is a form of active transport in which the cell sends materials out of the cell using vesicles, small storage structures that fuse to the cell membrane.

• exocytosis

• endocytosis

• facilitated diffusion

• osmosis

If the X molecules represent solutes, compare the internal solution to the external solution.

• Isotonic

• Hypertonic

• Hypotonic

If the X represents carbon dioxide molecules, in which direction would they move during diffusion?

• Out of the cell.

• Into the cell.

• In and out at equal rates.

If X represents oxygen molecules, which direction would they move during diffusion?

• Into the cell.

• Out of the cell.

• In and out at equal rates.