Exchange of Materials Flashcards
1
Q
Give some examples of substances that need to be transported into and out of organisms.
A
- Oxygen
- Carbon dioxide
- Water
- Dissolved food molecules
- Mineral ions
- Urea
2
Q
Give one factor that affects how easy it is for an organism to exchange substances with its environment.
A
The ratio of its surface area to volume
3
Q
If an organism is large in size, what does this mean about the ratio of its surface area to its volume?
A
It has a small surface area compared to its volume
