going for gold

what all living cells need to do

why is energy need by organisms

what is aerobic respiration

how is glucose supplied

how is glucose absorbed into the blood and carried aroun the body

the circulatory system

the breathing system

air sacs

alveoli

how do the alveoli help

how is the oxygen carried around

tissue fluid

we breathe out (exhale) more...

we breathe in (inhale) less

gas exchange

test for carbon dioxide

amounts inhaled and exhaled

breathing rate

pulse rate

......... rate and.................rate increases when you do exercise because your cells need more oxygen and glucose for respiration

when cells do not get enough........... they cannot release ............ and they will die

fish use .......... to breathe and the oxygen diffuses into the ............ of underwater plants