Passive Transport

What is passive transport?

• Movement of substances across a cell membrane with an input of energy by the cell

• Movement of substances across a cell membrane without an input of energy by the cell

• Movement of substances across a cell membrane against the concentration gradient

• Movement of substances across a cell membrane through active transport

Which of the following is a type of passive transport?

• Endocytosis

• Exocytosis

• Facilitated diffusion

• Phagocytosis

What drives diffusion?

• Electrical energy

• Chemical energy

• Kinetic energy

• Potential energy

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

What is the concentration gradient?

• The difference in concentration of molecules across a space

• The movement of molecules from high to low concentration

• The state in which the concentration of molecules is the same throughout

• The pressure water molecules exert on the cell wall

Which molecules are able to diffuse through the cell membrane?

• Polar and large molecules

• Nonpolar and small molecules

• Charged particles (ions)

• Water molecules

What is osmosis?

• The movement of molecules from high to low concentration

• The movement of water molecules from low to high concentration

• The movement of water molecules from high to low concentration

• The movement of solutes from high to low concentration

In which type of solution does osmosis occur?

• Hypotonic

• Hypertonic

• Isotonic

• All of the above

What happens to an animal cell in a hypertonic solution?

• It bursts

• It shrinks

• It remains the same

• It undergoes plasmolysis

How do unicellular animals or protists get rid of extra water in a hypotonic environment?

• Through endocytosis or by using a contractile vacuole

• Through exocytosis or by pumping solutes out of the cytosol

• By pumping solutes out of cytosol or with a contractile vacuole

• By increasing turgor pressure

Tags

NGSS.HS-LS1-3

What is facilitated diffusion?

• Diffusion with the help of carrier proteins

• Diffusion with the help of ion channels

• Diffusion against the concentration gradient

• Diffusion of water molecules

Tags

NGSS.HS-LS2-3