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BIO NMDCAT Carbohydrates
nmdcat.online June 27, 2026

An essential difference between the storage polysaccharides glycogen and starch is that glycogen has a higher degree of branching, which is quantified by the

A. Percentage of β-1,3 linkages
B. Ratio of α-1,6 to α-1,4 glycosidic bonds
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C. Length of the non-reducing end chains
D. Number of glucose molecules in the core of the polymer

📝 Explanation

Branching frequency is measured by the ratio of α-1,6 branch points to α-1,4 linkages in the linear chain. Glycogen has a higher ratio than amylopectin, with branches occurring roughly every 8-12 glucose units compared to every 24-30 in amylopectin.

📖 Additional Information

  • Percentage of β-1,3 linkages
  • Ratio of α-1,6 to α-1,4 glycosidic bonds
  • Length of the non-reducing end chains
  • Number of glucose molecules in the core of the polymer

Branching frequency is measured by the ratio of α-1,6 branch points to α-1,4 linkages in the linear chain. Glycogen has a higher ratio than amylopectin, with branches occurring roughly every 8-12 glucose units compared to every 24-30 in amylopectin.

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