More photosynthesis and respiration …

Photosynthesis on the act by andredoreto on flickr

Welcome back after a well-deserved break.  Now to pick up where we left off …

We will be doing an online photosynthesis simulation using explorelearning.  You will need to log in with username and password.  These are the same as for brainpop.  Click on launch gizmo on the photosynthesis lab.  You can then experiment by changing several factors and seeing how it affects the rate.  Here are some questions to answer:

  • What effect does changing temperature have on the rate of photosynthesis?
  • What effect does changing light intensity have on the rate of photosynthesis?
  • What effect does changing carbon dioxide concentration have on the rate of photosynthesis?
  • What effect does changing the colour of light (wavelength) have on the rate of photosynthesis?

For each of these, can you sketch the shape of the graph.  Don’t forget to label the axes.

We will be discussing the concept of limiting factors.  We will use the data in this excel document for this. Limiting factors data

You can check out this post by Mr Duckworth for some extra help as well.

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