Biology 1.3.4

Question 1

Define ‘Osmosis’:

Answer 1

The Movement of Water into & out of Cells. From an Area of High Concentration to an Area of Low Concentration. Down the Concentration Gradient.

Question 2

Osmosis is a special type of…

Answer 2

Diffusion.

Question 3

Define a ‘Dilute Solution’:

Answer 3

A Solution with a High Concentration of Water Molecules (Solvent), and a Low Concentration of Solute Molecules.

Question 4

Define a ‘Concentrated Solution’:

Answer 4

A Solution with a Low Concentration of Water Molecules (Solvent), and a Hugh Concentration of Solute Molecules.

Question 5

Define ‘Hypertonic’:

Answer 5

Outside Solution is more Concentrated than Inside Solution.

Question 6

Define ‘Hypotonic’:

Answer 6

Outside Solution is less Concentrated than Inside Solution.

Question 7

Define ‘Isotonic’:

Answer 7

The Concentration of the Outside Solution = The Concentration of the Inside Solution.

Question 8

If a Plant Cell is Hypertonic, what will happen?

Answer 8

Water will move out of the Cell via Osmosis.

Question 9

If a Plant Cell is Hypotonic, what will happen?

Answer 9

Water will move into the Cell via Osmosis.

Question 10

Define ‘Turgor’:

Answer 10

When a Plant Cell has too much Water in it, the Cytoplasm becomes very Diluted, and it pushes against the Cell Wall.

Question 11

Define ‘Flaccid’:

Answer 11

When a Plant Cell doesn’t have enough Water in it, the Cytoplasm becomes very Diluted, and the Plant Wilts, to prevent further Water Loss.