Biology, 14.02.2020 21:59 ejsteel2

Starch, cellulose, dextran, and glycogen are polysaccharides. How are they similar? To what are their different properties due? Why can't an enzyme that hydrolyzes starch degrade cellulose?

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Answer from: shawn20034

similarity

Starch, cellulose,dextran and glycogen are all polymers of glucose

differences

monomer/glucose glycosidic bond branching

1.starch α glucose 1-4 and 1-6 branch and unbranced

amylose 1-4 unbranched

amylopectin 1-4 and 1-6 branched

2. dextran α glucose 1-6 branched

3. cellulose β glucose 1-4 unbranched, linear

4. glycogen α glucose 1-4 and 1-6 branched (shorter

branches than starch)

Enzyme: amlase acts on starch and cellulase acts on cellulose as they are specific for their substrates.

Explanation:

Starch: Consists of both branched amylopectin and unbranched amylose

Enzymes: Enzymes are specific as the gulcose molecule in starch is α and in cellulose is β which differ in their position of hydroxyl groups at anomeric carbon, their structures differ so they form different bonds. Active sites of enzymes can act only on specific bonds a sthey can fit to their specific substrates.

Answer from: Quest

individual oxygen atoms are formed during photosynthesis.-c.

Answer from: Quest

increase soil erosion reduce soil erosion

cattle grazing hydroseeding

deforestation contour plowing

planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

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Starch, cellulose, dextran, and glycogen are polysaccharides. How are they similar? To what are thei...

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