Question

Glycogen has: Group of answer choices all of these are correct one non-reducing end; multiple reducing ends one reducing end; one non-reducing end multiple non-reducing ends; multiple reducing ends one reducing end; multiple non-reducing ends

Answer 1

Answer:

The correct option is "B," which is One non-reducing end; multiple non-reducing ends;

Explanation:

In glycogen, about 10% of the glucose units are branched (Lehninger. p304-305). The molecule has one reducing end (right hand end of chain) but many non-reducing ends (left hand ends) due to the branches. The non-reducing ends are the locations of all glucose additions or removals.

Therefore, in a molecule of glycogen, there is only one reducing end but the number of non-reducing ends depends on the number of α→6 glycosidic linkages or the branches.

For more clarifications find attached image of a glycogen with One non-reducing end; multiple non-reducing ends;