Osmosis and Diffusion

Question 1

What are partially permeable membranes?

Answer 1

Meaning some substances can pass through but others cannot.

Question 2

What is Diffusion

Answer 2

The movement of molecules from an area of high concentration to an area of low concentration, down a concentration gradient.

Question 3

What is Osmosis

Answer 3

Osmosis is the diffusion of water molecules from an area with a low concentration of solutes to a place with higher concentration of solutes

Question 4

What is plasmolysis

Answer 4

this refers to the contraction or shrinkage of the protoplasm of a plant cell which is caused by the loss of water in the cell.

Question 5

What is Active Transport

Answer 5

This is the movement of Ions or molecules IN or OUT of a cell through the cell membrane AGAINST a concentration gradient.

Question 6

What is the meaning of turgid

Answer 6

Turgidity is the state of being turgid or swollen, especially due to high fluid content.

Question 7

What is the meaning of haemolysis

Answer 7

breakdown or destruction of red blood cells so that the contained oxygen-carrying pigment hemoglobin is freed into the surrounding medium

Question 8

What is water potential

Answer 8

Water potential is defined as the potential energy of water in the system to pure water when the pressure and temperature are held constant.

Question 9

What is Solute potential

Answer 9

pressure which needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane