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What sugars can plants convert into starch?

Asked by 00kay00 | Apr 12, 2007 | A Level > Biology > Coursework
00kay00
00kay00 asks:

I'm doing my coursework on the rate of starch synthesis and know how to go about writing up the procedure etc. but I dont know what sugar solutions are best to use and why? I do know that glucose solution will work as it is the main respiratory substrate of plants, and it will lead to starch synthesis, but I do not know what other sugar solutions to use and have looked everywhere but not found any answers.
I need 5 different sugars. Is there anyway you can help?

etutor answers:
Besides glucose, you could use fructose, sucrose (glucose + fructose) and maltose (glucose +glucose). Glucose is needed to make starch, so all of these should work to some extent. Lactose (glucose + galactose) could also be used, but may not work as plants may not have the enzymes to break down lactose (it is found in milk so plants would not naturally encounter it).

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Aleya
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