Medfield Unit 4 Part 2

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of a cell, causing water to move into the cell, potentially leading to swelling.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf external substances, bringing them into the cell by forming a vesicle.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of a cell, causing water to move out of the cell, potentially leading to shrinkage.

Front

What are vesicles?

Back

Vesicles are small compartments enclosed by a membrane that transport materials within a cell during processes like endocytosis and exocytosis.

Front

What happens to a freshwater fish in saltwater?

Back

The freshwater from the fish's cells moves out into the saltwater, causing the cells to shrink and the fish to potentially die.

Front

What is diffusion?

Back

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

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials by vesicles fusing with the cell membrane and releasing their contents outside the cell.

Front

What is the sodium-potassium pump?

Back

The sodium-potassium pump is a type of active transport that moves sodium ions out of the cell and potassium ions into the cell, maintaining cellular balance.

Front

What is an isotonic solution?

Back

An isotonic solution has an equal concentration of solutes compared to the inside of a cell, resulting in no net movement of water.

Front

How do cells maintain homeostasis?

Back

Cells maintain homeostasis by regulating the movement of substances in and out of the cell through processes like diffusion, osmosis, and active transport.