Exploring Cell Membrane Transport Mechanisms

What does the second law of thermodynamics state about the universe?

• It tends towards a state of equilibrium.

• It tends towards a higher state of entropy.

• It tends towards a lower state of entropy.

• It remains in a constant state of entropy.

In simple diffusion, molecules move from an area of:

• High concentration to low concentration.

• No concentration to high concentration.

• Low concentration to high concentration.

• Equal concentration to equal concentration.

What type of transport does not require the cell to expend energy?

• Endocytosis

• Facilitated diffusion

• Exocytosis

• Active transport

Which molecules can pass through the cell membrane via simple diffusion?

• Polar molecules

• Large proteins

• Nonpolar molecules

• Ions

What is the role of integral proteins in facilitated diffusion?

• They act as channels for specific molecules.

• They provide energy for the process.

• They break down molecules.

• They create a barrier for molecules.

Active transport requires energy in the form of:

• Glucose

• ATP

• Oxygen

• Carbon dioxide

Which process involves the cell taking in large particles by engulfing them?

• Phagocytosis

• Exocytosis

• Pinocytosis

• Osmosis

What happens to an animal cell placed in a hypotonic solution?

• It loses water and becomes rigid.

• It shrivels up.

• It remains the same.

• It takes on water and may burst.

In osmosis, water moves from an area of:

• Equal concentration to equal concentration.

• Low concentration to high concentration.

• High concentration to low concentration.

• No concentration to high concentration.

What is the term for the pressure created when water enters a plant cell?

• Osmotic pressure

• Turgor pressure

• Hydrostatic pressure

• Atmospheric pressure