Respiration Pg29,30 Flashcards
What is respiration
process of transferring energy from glucose
which cells do respiration happen in
every cell in your body
Why does ATP store energy
because the energy transferred by respiration cannot be used directly by cells, so it is used to make a substance called ATP
what does aerobic respiration mean
respiration when oxygen is available
how much ATP does aerobic respiration produce
a lot (32 molecules per molecule of glucose)
what is the word equation for respiration
glucose + oxygen —> carbon dioxide + water + ATP
what is the chemical equation for respiration
C6H12O6 + 6O2 —> 6CO2 + 6H2O + ATP
what does anaerobic respiration mean
respiration when oxygen is not available
how much ATP does anaerobic respiration produce
a lot less than aerobic (2 molecules per molecule of glucose)
what is the word equation for anaerobic respiration in animals
glucose —> lactic acid (+ energy)
what is the word equation for anaerobic respiration in plants
glucose —> ethanol + carbon dioxide (+ energy)
how to test for carbon dioxide production during respiration
- soak some dried beans in water for a day or two, they will start germinating and respiring
- put hydrogen-carbonate indicator into two test tubes
- seal the test tube with bung
- leave apparatus for set period of time
- during that time the indicator would have turned from orange to yellow due to the presence of carbon dioxide by the respiring beans
-use a control tube with boiled, dead beans to show hydrogen-carbonate indicator does not turn yellow by itself
How do you test for temperature change by repsiration
- add each set of beans to a vacuum flask
- place a thermometer into each flask and seal the top with cotton wool
- repeat experiment 5 times
- flask is well-insulated so when the beans respire the test flask’s temperature increases
- use a control flask to show temperature doesn’t increase with the dead beans.
