2) Diffusion And Osmosis

Question 1

Diffusion

Answer 1

The movement of particles from an area of high concentration to an area of low concentration.

Question 2

Osmosis

Answer 2

The movement of water particles, across a semi- permeable membrane, from an area of high water concentration to low water concentration

Question 3

What needs to happen in order for a cell to function properly

Answer 3

Raw materials that are needed for life processes need to enter the cell trough the semi - permeable membrane, and waste products must be removed from the cell

Question 4

What are the raw material that need to enter the cell

Answer 4

• glucose - cellular respiration
• proteins - muscle/ hormones/ enzymes
• water - all chemical reactions
• fats/ lipids - insulation

Question 5

What are the waste products that exit the cell

Answer 5

• excess water
• excess vitamins and nutrients
• carbon Dioxide
• urea ( skin )
• urine ( kidneys )
• uric acid ( kidneys )

Question 6

What useful substances may be secreted for the use of other cells

Answer 6

• enzymes
• hormones
• amino acids

Question 7

What is passive theta sport

Answer 7

Transport that requires no energy

Question 8

What is active transport.

Answer 8

Transport that requires energy ( ATP )

Question 9

Facilitated diffusion

Answer 9

Uses transport proteins to move across a membrane

Question 10

What is an isotonic solution ( give example )

Answer 10

A solution where the solute and water particles are the same both in the solution and in the cell.
Eg. Blood

Question 11

What is a hypertonic solution ( give example )

Answer 11

In the solution there is a high water potential and in the cell there is a low water potential. ( there are more water particles in the cell and more solute particles in the solution ). The water from the cell moves out into the solution to reach equilibrium and the cell shrinks or shrivels.
Eg. Salty solution / saline

Question 12

What is a hypotonic solution ( give an example )

Answer 12

There is a low water potential in the solution and a high water potential in the cell. ( There are more solute particles in the cell and there are more water particles in the solution ). The water from the solution moves into the cell to create equilibrium and the cell expands/ bursts
Eg. Distilled water

Question 13

What is it called when water moves equally in both directions

Answer 13

Dynamic diffusion or equilibrium

Question 14

Which organ insures that our blood is an isotonic solution

Answer 14

Kidneys ( blood passes through kidneys )

Question 15

What is maintaining the correct water balance in the body called.

Answer 15

Osmoregulation

Question 16

in a hypertonic solution, What are the solutes in the solution ( high, moderate or low )

Answer 16

High

Question 17

in a hypertonic solution the solute so inside the cell are … ( high, moderate or low )

Answer 17

Moderate

Question 18

in a hypertonic solution the water potential inside the cell is … ( high, moderate or low )

Answer 18

High

Question 19

in a hypertonic solution the water potential inside the solution is … ( high, moderate or low )

Answer 19

Low

Question 20

In a hypotonic solution, the solutes in the solution are… ( high, moderate or low )

Answer 20

Low

Question 21

In a hypotonic solution, the solutes inside the cell are… ( high, moderate or low )

Answer 21

Moderate

Question 22

In a hypotonic solution, the water potential of the cell is… ( high, moderate or low )

Answer 22

Low

Question 23

In a hypotonic solution, the water potential of the solution is… ( high, moderate or low )

Answer 23

High