efficient transport and exchange Flashcards
1
Q
what are the substances transported in and out of the body
A
carbon dioxide, oxygen, glucose, amino acids, hormones, waste chemicals
2
Q
function of oxygen
A
aerobic respiration
3
Q
function of glucose
A
respiration - energy
4
Q
function of urea
A
to remove toxic substances
5
Q
what are some adaptations of the lungs?
A
thin: particles don’t need to diffuse that far
large surface area: more room for particles to diffuse across
6
Q
what is the formula for surface: volume ratio?
A
surface/ volume
7
Q
why is surface: volume important in transport systems?
A
has relatively less surface area available for substances to diffuse through, so the rate of diffusion may not be fast enough to meet the cells requirements
