Exchange with the Environment

Front

What is the name of the energy molecule used by cells?

Back

ATP (Adenosine Triphosphate) is the energy currency of the cell, providing energy for various cellular processes.

Front

What is the process called when cells expel materials?

Back

Exocytosis is the process by which cells transport materials out of the cell by vesicles that fuse with the plasma membrane.

Front

Does passive transport require energy?

Back

False. Passive transport does not require energy as it relies on the natural movement of particles from high to low concentration.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What happens to water molecules during osmosis when the cell is in a hypertonic solution?

Back

Water molecules move out of the cell, causing the cell to shrink.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane allows certain molecules to pass through while blocking others, maintaining the internal environment of the cell.

Front

What is the role of ATP in cellular processes?

Back

ATP provides energy for various cellular activities, including muscle contraction, nerve impulse propagation, and biosynthesis.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them in a vesicle.