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NTSE Stage 2 SAT 2019 Exam Question Paper
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Question : 94
Total: 100
Glucose is the prime source of energy in our body. However, it is stored in the form of glycogen in the muscle and liver of animals and in the form of starch in plants. As a result, every time a cell requires glucose, it must hydrolyze glycogen which is an energy consuming process. Why does the cell store glycogen instead of glucose in free form?
Glycogen is more compact and more hydrophilic.
Storage of glucose in free form will consume more ATP.
Glucose in the free form creates more osmotic pressure.
Glucose is highly reactive molecule hence storing in the free form can result in unwanted reactions in the cells.
Validate
Solution:
Glycogen is insoluble thus, storing it as glycogen will not upset the osmotic pressure rather than glucose which is soluble in water. And if cell store it as glucose, it will disturb the osmotic pressure (hypertonic) that will cause the cell to lyse
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