2832706
| Question | Answer |
| going for gold | 8B |
| what all living cells need to do | respire to release energy |
| why is energy need by organisms | to stay alive, to move, to make new substances |
| what is aerobic respiration | when it involes oxygen |
| how is glucose supplied | from the digestion of carbohydrates |
| how is glucose absorbed into the blood and carried aroun the body | by the small intestine dissolved in the plasma of the heart |
| the circulatory system | |
| the breathing system | |
| air sacs | each one conatins tiny pockets called aveoli (singular=alveolus) |
| alveoli | |
| how do the alveoli help | give the lungs a bigger surface area which means that oxygen can diffuse quickly out of the air into the capillaries containing the blood only one cell thick |
| how is the oxygen carried around | by red blood cells |
| tissue fluid | comes out of capillaries bathes the tissues around the body contains glucose and oxygen which is taken out by the cells and replaced with carbon dioxide- which then is dissolved by the plasma |
| we breathe out (exhale) more... | carbon dioxide |
| we breathe in (inhale) less | carbon dioxide |
| gas exchange | oxygen diffusing into the blood and carbin dioxide disffusng out of the blood |
| test for carbon dioxide | lime water does it turn cloudy |
| amounts inhaled and exhaled | nitrigon gas 78% 78% oxygen gas 21% 16% carbon dioxide less more water vapour less more |
| breathing rate | number of breaths per minute |
| pulse rate | number of heart beats per second |
| ......... rate and.................rate increases when you do exercise because your cells need more oxygen and glucose for respiration | pulse and breathing |
| when cells do not get enough........... they cannot release ............ and they will die | oxygen and energy |
| fish use .......... to breathe and the oxygen diffuses into the ............ of underwater plants | gills and leaves |
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