Test - Cell Transport

Front

What is osmosis?

Back

Osmosis is the process by which water molecules diffuse across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is exocytosis?

Back

Exocytosis is the process by which particles are removed from a cell by vesicles fusing with the cell membrane and releasing their contents outside the cell.

Front

What is endocytosis?

Back

Endocytosis is the process by which a cell membrane surrounds a particle and encloses it in a vesicle to bring it into the cell, often used for large particles.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others, crucial for maintaining homeostasis in cells.

Front

What is the difference between osmosis and diffusion?

Back

Osmosis specifically refers to the movement of water across a membrane, while diffusion refers to the movement of any type of particles.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink or crenate due to loss of water.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell and potentially burst due to excess water.