Surface Area To Colume Ratio Flashcards
(9 cards)
1
Q
How do you calculate the surface area of a cube?
A
length × width × 6
2
Q
How do you calculate the volume of a cube?
A
length × height × width
3
Q
How do you calculate the surface area of a sphere?
A
4πr^2
4
Q
How do you calculate the volume of a sphere?
A
(4πr^3) / 3
5
Q
How do you calculate the surface area of a cylinder?
A
2πr^2 + 2πrh
6
Q
How do you calculate the volume of a cylinder?
A
πr^2h
7
Q
Describe adaptations of gas exchange surfaces shown by gas exchange across the body surface of a single-celled organism.
A
- Small size (μm) so large surface area to volume ratio.
- A single cell is small so diffusion distances inside the cell are short.
8
Q
CHECK
A
- Very small and thin-walled multicellular organisms can carry out gas exchange in the same way (across the organism’s surface).
9
Q
Explain the relationship between surface area to volume ratio and metabolic rate.
A
- Smaller mammals have a much larger surface area to volume ration and therefore loose more heat. It has a higher metabolic rate to maintain body temperature.
- Larger mammals are at risk of overheating
