MCAT Biochemistry Question 55: Answer and Explanation
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Question: 55
10. Which two polysaccharides share all of their glycosidic linkage types in common?
- A. Cellulose and amylopectin
- B. Amylose and glycogen
- C. Amylose and cellulose
- D. Glycogen and amylopectin
Correct Answer: D
Explanation:
Glycogen and amylopectin are the only polysaccharide forms that demonstrate branching structure, making them most similar in terms of linkage. Both glycogen and amylopectin use α-1,4 and α-1,6 linkages. Cellulose uses β-1,4 linkages and amylose does not contain α-1,6 linkages.