Monday, October 26, 2015

2.39 Understand gas exchange (of carbon dioxide and oxygen) in relation to respiration and photosynthesis

In both photosynthesis and respiration, gas exchange occurs: one gas is swapped for another. They are the opposite of each other, which is why it works.

 photosynthesis ~ carbon dioxide + water → glucose + oxygen
The plant, or whatever is photosynthesizing, is using the waste products of respiration, taking in carbon dioxide and giving out oxygen as a waste product.

 respiration ~ glucose + oxygen → carbon dioxide + water
The organism is using the products of photosynthesis (although glucose can be obtained through food, so I guess that doesn't really work..... you probably shouldn't put that in your exam...sozzies), taking in oxygen and giving out carbon dioxide.
Because why not, here is a diagram

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2 comments:

  1. IsabelleMay 30, 2016 at 12:08 AM

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  2. NutellaApril 12, 2017 at 3:23 AM

    When you said "The organism is using the product of photosynthesis" you were right because plants create their food through photosynthesis (and aren't fed).

    Thanks for the help.

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