Absence of Starch

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Shanique
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Absence of Starch

Post by Shanique » Wed Nov 16, 2011 8:47 am

A multicoloured leaf was removed from a plant and tested for starch. No starch was present although the plant was in the sunlight for more than 8hrs. Why is starch absent?

daniel.kurz
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Post by daniel.kurz » Wed Nov 16, 2011 4:36 pm

Quick uptake of glucose to cellulose and not storing glucose in starch or perhaps the plant doesn't make glucose that can be put into starch. It might make another carbohydrate type.

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JackBean
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Re:

Post by JackBean » Wed Nov 16, 2011 4:41 pm

daniel.kurz wrote:Quick uptake of glucose to cellulose and not storing glucose in starch or perhaps the plant doesn't make glucose that can be put into starch. It might make another carbohydrate type.

I don't think that's the reason, the glucose and starch production are ubiqitous and general. I think the hint is the multicolored leaf. But I don't know, what should that mean. Old leaf?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

daniel.kurz
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Re: Re:

Post by daniel.kurz » Wed Nov 16, 2011 8:43 pm

JackBean wrote: But I don't know, what should that mean. Old leaf?

I hadn't thought about that.

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