Tonicity Throwback Review Biology 4th pd

Front

What is tonicity?

Back

Tonicity refers to the ability of a surrounding solution to cause a cell to gain or lose water.

Tags

NGSS.HS-LS1-3

Front

Define hypertonic solution.

Back

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

Front

Define hypotonic solution.

Back

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

Front

Define isotonic solution.

Back

An isotonic solution has the same concentration of solutes as the inside of the cell, resulting in no net movement of water.

Front

What happens to a cell in a hypertonic solution?

Back

The cell will lose water and may shrivel or crenate.

Front

What happens to a cell in a hypotonic solution?

Back

The cell will gain water and may swell or burst (lyse).

Front

What is homeostasis?

Back

Homeostasis is the maintenance of a relatively stable internal environment within an organism.

Tags

NGSS.HS-LS1-3

Front

How does osmosis relate to tonicity?

Back

Osmosis is the movement of water across a semipermeable membrane, influenced by the tonicity of the surrounding solution.

Front

What is the effect of an isotonic solution on a cell?

Back

There is no net movement of water; the cell remains the same size.

Tags

NGSS.HS-LS1-3

Front

What is the role of the cell membrane in tonicity?

Back

The cell membrane regulates the movement of water and solutes, affecting the cell's tonicity.