Last min revision points I need to work on

Question 1

Define turgidity

Answer 1

State of being turgid or swollen especially due to high fluid content

Question 2

Importance of turgidity in plant cells

Answer 2

Essential in plant cells to make them keep standing upright.

Plant cells that lose too much water have less turgor pressure.

Question 3

Connection between turgidity, plasmolysis and osmosis

Answer 3

Turgidity occurs when water moves into a plant via osmosis.

Plasmolysis occurs when water moves out of plant via osmosis.

Question 4

Define diffusion

Answer 4

Passive transport of particles from an area of high to low concentration until equilibrium of concentration.

Question 5

Define osmosis

Answer 5

A special type of diffusion.
Movement of only water (H2O) molecules through a semi-permeable membrane from an area of low solute/salt concentration to an area of high solute/salt concentration until equilibrium of solution.

Question 6

Define plasmolysis

Answer 6

The shrinking of protoplasm away from the cell wall of a plant or bacterium due to water loss from osmosis.
Thereby, resulting in gaps between the cell wall and the cell membrane.

Question 7

Provide an example of the importance of diffusion in cellular/ biological function.

Answer 7

Within cells, oxygen diffuses from areas of higher concentration to areas with lower oxygen concentration, enabling cellular respiration and energy production.

Question 8

Provide an example of the importance of osmosis in cellular/ biological function.

Answer 8

When the bloodstream becomes hypertonic compared to the fluid inside the body’s cells. To balance this concentration, water moves out of the cells and into the bloodstream via osmosis.