Chapter 1.6 Diffusion Flashcards
1
Q
What is the definition of diffusion?
A
Diffusion is the spreading out of particles of and substance, in solution or a gas, resulting in a net movement from an area of higher concentration to an area of lower concentration, down a concentration gradient.
2
Q
What is the rate of diffusion affected by?
A
The rate of diffusion is affected by the difference in concentrations, the temperature, and the available surface area.
3
Q
What dissolved substances move in and out of cells by diffusion?
A
Dissolved substances such as glucose and urea and gases such as oxygen and carbon dioxide move in and out of cells by diffusion.
4
Q
What does net movement equal?
A
Net movement= particles moving in - particles moving out
