Unit 2 Check 4: Osmosis, Diffusion, and Membrane Transport

Which means of particle transport requires energy?

• diffusion

• osmosis

• facilitated diffusion

• active transport

During diffusion, when the concentration of molecules on both sides of a membrane is THE SAME, the molecules will

• move across the membrane to outside of the cell

• stop moving across the membrane

• continue to move across the membrane in both directions equally

• move across the membrane to the inside of the cell

Diffusion occurs because

• molecules are attracted to one another

• molecules are constantly moving in and out from high concentrations to low concentrations

• cellular energy forces the molecules to collide with each other

• cellular energy pumps molecules across the membrane from low concentration to high concentration

Which means of particle transport is shown in the picture?

• endocytosis

• exocytosis

• facilitated diffusion

• protein pump

Molecules tend to move from an area of high concentration to low concentration is called

• facilitated diffusion

• diffuson

• osmosis

• receptor

The diffusion of water across a selectively membrane is called

• diffusion

• active transport

• homestatsis

• osmosis

Large molecules, such as glucose, that cannot cross the lipid bilayer can still move across the membrane through a type of PASSIVE transport called

• facilitated diffusion

• active transport

• osmosis

• diffusion

Some materials can move across the cell membrane against a concentration gradient by

• active transport

• facilitated transport

• osmosis

• diffusion

Molecules from inside the cell being expelled out of the cell is known as

• endocytosis

• exocytosis

• diffusion

• osmosis

Tags

NGSS.MS-LS1-2

If an animal cell with an internal solute concentration of 9% were placed in a salt solution with a concentration of 3%, the cell would_____ because the external solution is _______.

• Shrink

  Hypertonic

• Stay the same

  Isotonic

• Swell

  Hypotonic