lucyjo_
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Hi, one of the criteria for OCR AS is 'Explain how the structures of glucose and glycogen molecules relate to their functions in living organisms'. I've already done cellulose and amylose, however I've spent the past hour on the internet and in 3 textbooks looking for information about glucose and glycogen and I can't find anything about how their structures relate to their functions. Can anyone help? Thank you!
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TSR Jessica
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Sorry you've not had any responses about this. Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get more responses. Hopefully someone will be able to get back to you
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kelefi
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read the book carefully. heres a tip, glycogen is a polysaccharide
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Joshalos
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(Original post by lucyjo_)
Hi, one of the criteria for OCR AS is 'Explain how the structures of glucose and glycogen molecules relate to their functions in living organisms'. I've already done cellulose and amylose, however I've spent the past hour on the internet and in 3 textbooks looking for information about glucose and glycogen and I can't find anything about how their structures relate to their functions. Can anyone help? Thank you!
Glycogen is a branched molecule containing units of glucose.

It's highly branched structure confers three properties:

It can be broken down into glucose quickly as there are many branch end points that can be targeted at one.

It is compact so you can store more glucose than free glucose.

It is more soluble.
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Kallisto
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(Original post by lucyjo_)
(...) 'Explain how the structures of glucose and glycogen molecules relate to their functions in living organisms'. (...)
Glycogen is a polysaccharide (so a long saccharide chain) which consists of many glucose molecules. It exists in Liver and kidneys. Whenever there is a surplus of carbohydrates, the carbohydrates are converting into glycogen, but whenever glucose is used as energy source, glycogen is converting into glucose molecules.

Thus glycogen is a reserve substance of an organism which is saved in muscle and liver cells, while glucose is used as energy when its needed.
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