3.3.1 Surface Area To Volume Ratio

Question 1

Feature of an exchange surface for rapid exchange

Answer 1

Large surface area to volume ratio
Thin membrane short diffusion distance
Maintain steep concentration, or diffusion to gradient for transport system to move in external or internal environment

Question 2

when doing experiment of ratio to surface area, what the student should have been done when she saw that on of the block in one shape required is broken

Answer 2

Repeat with an undamage block of same shape

Question 3

Describe a method you could use to find the surface area of a leaf.

Answer 3

1. Draw around leaf on graph paper;
2. Count squares (however described);
3. Multiply by 2 (for upper and lower leaf surface);
   OR
4. Draw around a leaf on paper of known mass (per unit area);
5. Cut out and weigh;
6. Multiply by 2 (for upper and lower leaf surface)