CELL TRANSPORT

Which of the following best describes diffusion?

• A. Movement of molecules from high to low

• Movement of molecules from low to high

• Movement of water across a membrane

• Transport of large molecules in vesicles

Diffusion continues until

• All molecules are destroyed

• Equilibrium is reached

• Energy is used up

• The cell stops functioning

Which of the following is an example of diffusion?

• Oxygen moving into blood in the lungs

• Water moving in a plant root

• Glucose uptake via protein channels

• Sodium ions pumped out of a neuron

Facilitated diffusion differs from simple diffusion because it

• requires ATP

• Moves molecules against concentration gradient

• Uses transport proteins

• Involves vesivle formation

Which molecules are most likely to use facilitated diffusion?

• Oxygen and Carbon dioxide

• Large polar molecules like glucose

• Lipid soluble molecules

• Water

Facilitated diffusion is a type of

• Active transport

• Passive transport

• Bulk transport

• Endocytosis

Osmosis refers to the movment of

• Glucose

• Sodium ions

• Water

• Proteins

When a cell is placed in a hypertonic solution. water will

• A> Move into the cell

• Move out of the cell

• Move in and out equally

• Not move at all

Tags

NGSS.HS-LS1-3

A plant cell placed in a hypotonic solution will become

• Soft

• Destroyed

• Swollen

• Shrunken

Which of the following describes endocytosis?

• Expelling materials out of the cell

• Bringing materials into the cell via vesicles

• Movement of water into the cell

• Passive transport of small molecules