Exchange of materials (Edexcel GCSE Biology): Flashcards

For aerobic respiration to release energy

A waste product that must be removed

Glucose, amino acids, fatty acids

Sodium, potassium, calcium

Waste from amino acid breakdown in liver

Large surface area to volume ratio

Smaller SA:V ratio, diffusion alone insufficient

Transports $O_2$, $CO_2$, nutrients, waste around body

Water and mineral ions from roots

Sugars and amino acids from leaves

Gas exchange - $O_2$ in, $CO_2$ out

Absorb dissolved food molecules into blood

Absorb water and mineral ions from soil

Gas exchange openings for $O_2$ and $CO_2$

$\text{Surface Area} \div \text{Volume}$