Saturday 23 February 2013

2.67 understand the origin of carbon dioxide and oxygen as waste products of metabolism and their loss from the stomata of a leaf

The metabolic processes are respiration and photosynthesis.
Photosynthesis is CO2 + H2O > C6H12O6 + O2 thats carbon dioxide plus water becomes glucose and oxygen- the glucose is used for energy and oxygen is a waste product, it leaves the leaf through the stomata.
Respiration is C6H12O6 + O2 > H2O + CO2 + atp thats glucose + oxygen > water + carbon dioxide + energy- carbon dioxide is a waste product and is excreted from the leaf through the stomata.

10 comments:

  1. I think it should be C6H12O6 + 6O2 → 6CO2 + 6H2O + energy of respiration and 6CO2 + 6H2O > C6H12O6 + 6O2 + 6H2O for photosynthesis.

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    Replies
    1. u just balanced it..... well done

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    2. u just balanced it..... well done

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    3. buddy... buddy... photosynthesis doesn't make water

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    4. buddy... buddy... photosynthesis doesn't make water

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  2. This comment has been removed by the author.

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  3. The Biology Syllabus has changed.... New Syllabus Blog:

    http://igcse-biology-2017.blogspot.hk

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  4. more at

    http://igcse-biology-notes.blogspot.hk/2017/06/267-understand-origin-of-carbon-dioxide.html

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