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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.
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Can a dilute iodine solution be used to distinguish between amylose and amylopectin?
Hell nah
Why is the Benedict's test is positive when water starch and HCl keep for 30mins?
benedicts test is positive when water starch and HCL keep for 30 mins because glycosidic linkages between amylose and amylopectin breaks and free ends are available to react with Benedict reagent
The difference between the chemical bonds in starch and those in cellulose?
they are all glycosidic bonds. in cellulose they are bonded so the sugars flip after every bond like a zig zag. in amylose it forms a right handed helix. in amylopectin it forms a right handed helix with a lot of branches (make it less soluble than amylose) Also Cellulose bonds are not hydrolyzed by human enzymes.
What is the difference between starch solution and iodine solution?
Starch is composed of amylose and amylopectin, and is not soluble in water due to the presence of amylopectinIodine (I₂) is somewhat soluble in water, but is more soluble in iodide (I⁻) solutions, such as potassium iodide solution (KI).Aqueous iodine molecules (I₂) and iodide ions (I⁻) together will form triiodide ions (I₃⁻), which can react with amylose found in starch to produce a deep-blue colour in the solution. So all of iodide (I⁻), iodine (I₂) and amylose (or starch) are required together to produce the colour.This can be used to test for:Amylose/Starch: Add iodine dissolved in potassium iodide solution to test solution, orIodine: Add starch and potassium iodide solutions to test solution.If the substance being tested for is present, then triiodide ions (I₃⁻) can react with amylose (in starch) to produce a deep-blue colour, that is, a positive result.
What is basic difference between the structures of Cellulose and Starch?
Both, cellulose and starch, has a linear structure of glucose monomers connected by glyosidic bonds (1-4 glycosidic bond = Carbon atom number 1 linked with Carbon atom number 4 of the next glucose monomer's). The basic structural difference is whether the linkage is alpha or beta glycosidic bond. (Alpha and beta denotes the spatial aspect of the bondage. Alpha bondage is below the plane, beta bondage is above the plane). Cellulose is linked by beta-1-4 glycosidic bonds. Starch is linked by alpha-1-4 glycosidic bonds.
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.
Can a dilute iodine solution be used to distinguish between amylose and amylopectin?
Hell nah
What does amylopectins do to starch?
Starch is a mixture of two types of polymers (or macromolecules) namely: Amylose and Amylopectin. Both polymers have a fairly large distribution of sizes, but are still made of glucose units. The main distinguishing factor between amylose and amylopectin is the amount of branching. Amylopectin is more branched than amylose (long chain polymer). So amylopectin is actually refering to starch molecules which are branched.
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.
Starch is a?
Starch is a polymer consisting of large numbers of alpha-glucose units joined together by glycosidic bonds. It is composed of amylose and amylopectin. In amylose, the glucoe is linked in a linear fashion by 1,4 glycosidic bonds. These bonds cause the chain to coil helically into a more compact shape due to the tetrahedral chemistry of carbon and the bond angles that result. Amylopectin is also compact and has a linear arrangement of glucose linked by 1,4 glycosidic bonds. However, at regular intervals, a 1,6 glycosidic bond forms between two adjacent glucose molecules. These bonds result in the formation of a highly branched structure. Starch has three times more amylopectin than amylose.
What is the difference between long and short grain rice?
The two main starches in rice are amylose and amylopectin. The grains tend to hold on the their amylose but amylopectin can leave the grain and move into the liquid being used for cooking. Long-grain rice has a lot of amylose and not much amylopectin. Short-grain rice has a good balance of both. So long grain rice will be lighter and fluffy because the grains will not get too sticky. Short grain rice will pour starch into the water it cooks in creating a sticky coating on all the grains which, if properly treated, can be made into an amazing, creamy sauce. Long-grain rices are great for dishes where rice is a base for something or playing second-fiddle to something else. Short-grain rice is superb for dishes where the rice is going to be the star, like a risotto.
What is the structural difference between stentor and vorticella?
One structural difference between Stentor and vorticella is that Stentor is a protozoa. Vorticella is a sessile organism, meaning that it is immobile.
What is the difference between structural and condensed formula?
The structural formula show the position of atoms in a molecule.
Why is the Benedict's test is positive when water starch and HCl keep for 30mins?
benedicts test is positive when water starch and HCL keep for 30 mins because glycosidic linkages between amylose and amylopectin breaks and free ends are available to react with Benedict reagent
In a disaccharide two monosaccharides are joined by what kind of bond?
Junctions between saccharide molecules are called glycoside bonds. This not only includes mono saccharides to form disaccharides but also many to form polysaccharides like amylopectin and amylose found in the starch of plants and glycogen in animals.
The main structural difference between starch glycogen cellulose comes from?
The main structural difference comes from the difference in the sequence of bonds in glycogen and cellulose and starch where the three of them composed mainly of glucose and its derivatives Starch, glycogen and cellulose are all polymers of glucose. They differ in the type of glucose present and the bonds which link thr glucose monomers together. Starch and glycogen are made from alpha-glucose. This is an isomer of glucose in which the hydroxyl (-OH) group attached to carbon number 1 is below the plane of the ring. Starch is itself composed of two types of polymer:amylose and amylopectin. In amylose, the glucose monomers are linked by 1,4 glycosidic bonds. This means that the bond connects carbon atom number 1 in one glucose to carbon atom number 4 in the other glucose. This produces an unbranched chain of glucose which then folds up to form a coil or helix. In amylopectin there are two types of glycosidic bonds: 1,4 and 1,6. The 1,4 links are the same as in amylose. In addition some glucose molecules have a glycosidic link from carbon atom number 6 to carbon atom number 1 in a new glucose molecule. This produces a branch point in the amylopectin molecule. Amylopectin is therefore a branched polymer. Glycogen is similar in structure to amylopectin, but branches more frequently. Cellulose is an unbranched polymer composed of beta glucose molecules. Beta glucose is an isomer of glucose in which the hydroxyl group attached to carbon 1 is above the plane of the ring. The glucose monomers are linked by 1,4 glycosidic bonds. Hydrogen bonds between adjacent cellulose molecules allow them to form strong fibres, which suite them to their role as the main structural component of plant cell walls. For more details see: http://www.steve.gb.com/science/index.html http://en.wikipedia.org/wiki/Polysaccharide http://www.rpi.edu/dept/bcbp/molbiochem/MBWeb/mb1/part2/sugar.htm
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.
