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Yes, they are helical. The change in colouration is due to iodine being trapped in the helix. Difference in colour is due to the different wavelength of light being absorbed when iodine form bonds with the glucose molecules in the helix.

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Q: Does glycogen and amylopectin have a helical structure like amylose and if yes why is it that glycogen and amylopectin form red-violet colouration with potassium iodide?
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Related questions

Why is amylopectin more compact than amylose?

Actually, amylose is more compact than amylopectin due to its helical structure. Amylose is unbranching and forms a compact helix, whereas amylopectin is a branching structure.


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Amylopectin has what characteristics?

Amylopectin is a branched-chain polymer of glucose that is a component of starch, characterized by frequent branching points that create a highly branched structure. It can be broken down into glucose units for energy more quickly than amylose due to its branched structure. Amylopectin is less prone to retrogradation compared to amylose, making it more suitable for applications where a gel-like consistency is desired.


What is the difference between amylose and amylopectin?

Amylopectin is easer for enzymes to get around and break it down. Amylose is a long unbranced chain of glucose, it has a cylinder like structure wich makes it compact so its good for storage. Amylopectin is a long branched chain of glucose, its structure is a benifit because enzymes that break glycosidic bonds to break down the moleclue get to it faster. This means glucose is released faster.


Does potassium have a crystalline structure?

yes potassium have a chgjihgbidhidhgido


Are starches with a relatively large amount of amylose digested more quickly than those with amylopectin?

Enzymes are often substrate-specific, meaning they will only catalyze a reaction with a certain molecule. The difference in structure between amylose and amylopectin causes amylase to catalyze one and not the other.


What is the Lewis structure for Potassium Hydrogen Phthalate?

Check out the related link for the structure of Potassium Hydrogen Phthalate.


What element has atoms with this structure?

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What is the silicate structure of Muscovite?

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What is the Chemical structure for potassium iodide?

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What is the structure of corn?

Corn or maize contains carbohydrates and simple sugars such fructose, glucose, and sucrose. The starch from maize contains two glucose polymers (amylose and amylopectin).