Biology Unit 2

HideShow resource information
What is the definition of Active Transport?
Active transport is the process by which dissolved molecules move across a cell membrane from a lower to a higher concentration.
1 of 5
What is the definition of Osmosis?
Osmosis is the movement of water molecules through a partially permeable membrane from a low concentration to a high concentration until equilibrium is reached.
2 of 5
What is the definition of Diffusion?
Diffusion is the process by which particles of a substance spread out from each other, moving from a region where they are in high concentration to a region of low concentration.
3 of 5
What are common features of exchange surfaces?
having a large surface area for greater exchange – achieved by having a folded surface AND having a thin exchange surface for a short diffusion distance.
4 of 5
How are Villi adapted for the maximum absorption of digested food molecules?
the folded villi greatly increase the surface area of the intestine
5 of 5

Other cards in this set

Card 2

Front

What is the definition of Osmosis?

Back

Osmosis is the movement of water molecules through a partially permeable membrane from a low concentration to a high concentration until equilibrium is reached.

Card 3

Front

What is the definition of Diffusion?

Back

Preview of the front of card 3

Card 4

Front

What are common features of exchange surfaces?

Back

Preview of the front of card 4

Card 5

Front

How are Villi adapted for the maximum absorption of digested food molecules?

Back

Preview of the front of card 5

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Exchange of materials resources »