Cells - Transport Across Membranes: Forms of transport Flashcards
1
Q
What is passive transport?
A
The exchange of substances between cells and the environment not requiring metabolic energy.
2
Q
What is active transport?
A
The exchange of substances between cells and the environment that requires metabolic energy.
3
Q
Give 2 examples of passive transport.
A
Diffusion
Osmosis
4
Q
Does all movement of cells require energy?
A
Yes
5
Q
Where does energy for passive transport come from?
A
The natural, inbuilt motion of the particles.
6
Q
Where does energy for active transport come from?
A
External sources such as ATP.
7
Q
Why are all particles constantly in motion?
A
Due to the kinetic energy they possess.
8
Q
Is there a pattern to the way particles move around?
A
No, their motion is random
