Question

Consider the following statements about amylopectin and glycogen:

      1) Both amylopectin and glycogen have ɑ-1,4-linkages within chains.

      2) Both glycogen and amylopectin have ɑ-1,6-linkages between chains.

      3) The chains in amylopectin contain approximately 25 glucose units each, while the chains in glycogen contain 10-15 glucose units each.

      4) The chains in amylopectin contain 10-15 glucose units each, while the chains in glycogen contain approximately 25 glucose units each.

      5) Glycogen and amylopectin are both made of ɑ-D-glucose units.

     Which statements are true?

Answer 1

True statements :- 1, 2, 3 and 5

Statement number 4 is false

Structures of amylopectin and glycogen are similar. Both are made from alpha D glucose units. The major difference is that amylopectin is a soluble form of starch and glycogen is a insoluble form of starch.

Amylopectin contain nearly 30 glucose units in a chain and glycogen contain nearly 10-15 glucose units in a chain.