OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Starch is soluble in water while glucose is not.
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Starch is composed of cellulose while glycogen is composed of glucose.
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Glycogen is found in animals while starch is found in plants.
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They both function as a source of energy.
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Detailed explanation-1: -Both glycogen and starch are made from glucose monosaccharides. The primary function of starch in plants and glycogen in animals is to store energy for later use. In plants, starches are produced in plastids. In animals, glycogen is produced in liver and skeletal muscle cells and primarily stored in the liver.
Detailed explanation-2: -In animal cells, glucose is generally stored in the form of glycogen. This is done to not upset the osmotic balances in the cell. Glucose molecules are soluble in water and thus can cause the cell to become hypertonic. This will result in the entry of water molecules within the cells and cause it to lyse.
Detailed explanation-3: -Cellulose is the main storage polysaccharide in plants while glycogen is an important storage polysaccharide in many animals. Both starch and glycogen are composed of -glucose subunits. Starch is composed of amylose and amylopectin, which are unbranched and branched chains of -glucose subunits, respectively.