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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?
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.
The structural difference between amylose and amylopectin?
Amylose is type of starch which is unbranched. Consisting 1-4 Alfa glycosidic linkage. It is not easy to digested and takes less space than amylopectin. Amylopectin is branched and consisting 1 alfa 1-6 linkage per 30 alfa 1-6 linkage. It is similar to glycogen expecting lower level of branching.
How does the structure of amylose compare to the structure of glycogen?
Recent research has actually shown that Glycogen IS actually a form of amylopectin. Amylopectin is a branched polysaccharide joined by alpha-1,4 linkages with branch points of alpha-1,6. The 1-4 linkage is because C1 of one glucose molecule is linked to the C4 of the next. The 1-6 linkage occurs every 10 glucose molecules or so. The alpha-amylase hydrolyzes only the alpha-1,4... NOT the alpha-1,6.
These compounds are composed of molucules whose carbon atoms are arranged in a straight chain a branched chain or a ring?
Sugar's carbons are arranged in a ring. These rings of carbon are sometimes arranged straight chains (cellulose) or branched (glycogen or amylopectin).
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.
What is the difference between amylopectin and glycogen?
Amylopectin is a branched chain polymer of glucose found in plants, while glycogen is a highly branched polymer of glucose found in animals and humans. Both serve as storage forms of glucose, with glycogen being the main form of energy storage in animals and humans, while amylopectin is the main form of energy storage in plants.
What linkages would you expect to find at a branch point in glycogen or amylopectin?
α-1,6-glycosidic linkage
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?
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.
Why glycogen gives red colour with iodine?
When Iodine is added to amylose, the helical shape of the unbranched polysaccharide traps Iodine molecules, producing a deep blue-black complex. Amylopectin, cellulose, and Glycogen react with iodine to give red to brown colors. Glycogen produces a reddish-purple color.
What is the simplest form of starch?
The two components of starch are amylose and amylopectin. Amylose is a straight chain molecule made of glucose molecules joined by alpha 1-4 links. Amylopectin is a branched molecule made of glucose joined by alpha 1-4 links, with branches joined by alpha 1-6 links.
How are starch and glycogen similar and how do they differ?
Startch have two types of polymer chain,one is amylose and another is amylopectin.Amylose is simple straight chain of glucose(1--->4 linkage),while amylopectin have branching.At branching point,there is 1--->6 linage and 1--->4 linkage in every subchain. So,in startch 1-6 linkage comes after 20 to 25 gucose monomer,while in gycogen this linkage comes very frequently.....
The structural difference between amylose and amylopectin?
Amylose is type of starch which is unbranched. Consisting 1-4 Alfa glycosidic linkage. It is not easy to digested and takes less space than amylopectin. Amylopectin is branched and consisting 1 alfa 1-6 linkage per 30 alfa 1-6 linkage. It is similar to glycogen expecting lower level of branching.
What are the reactants of amylase?
The Substrate for amylase are starch (amylose and Amylopectin), glycogen, and various Oligosaccharides.
How does the structure of amylose compare to the structure of glycogen?
Recent research has actually shown that Glycogen IS actually a form of amylopectin. Amylopectin is a branched polysaccharide joined by alpha-1,4 linkages with branch points of alpha-1,6. The 1-4 linkage is because C1 of one glucose molecule is linked to the C4 of the next. The 1-6 linkage occurs every 10 glucose molecules or so. The alpha-amylase hydrolyzes only the alpha-1,4... NOT the alpha-1,6.
Starch and are common carbohydrate polysaccharides found in plants?
glycogen
Two polysaccharides that store glucose are?
If by 2 polysaccharides you mean any two, then some of the common examples would be cellulose, peptidoglycan, starch (amylose and amylopectin), hemicellulose, chitin, glycogen ........... the list is almost endless.
These compounds are composed of molucules whose carbon atoms are arranged in a straight chain a branched chain or a ring?
Sugar's carbons are arranged in a ring. These rings of carbon are sometimes arranged straight chains (cellulose) or branched (glycogen or amylopectin).
