What sequence of enzymes allows for the synthesis of glycogen from glucose-6-phosphate?
a. udp-glucose pyrophosphorylase, phosphoglucomutase, glycogen synthase, amylo-(1,4α1,6)-transglycosylase
b. phosphoglucomutase, udp-glucose pyrophosphorylase, amylo-(1,4α1,6)-transglycosylase, glycogen phosphorylase
c. phosphoglucomutase, amylo-(1,4α1,6)-transglycosylase, udp-glucose pyrophosphorylase, glycogen synthase
d. udp-glucose pyrophosphorylase, phosphoglucomutase, amylo-(1,4α1,6)-transglycosylase, glycogen synthase
e. phosphoglucomutase, udp-glucose pyrophosphorylase, glycogen synthase, amylo-(1,4α1,6)-transglycosylase

The answer is (e) : phosphoglucomutase, UDP-glucose pyrophosphorylase, glycogen synthase then amylo-(1,4-1,6)-transglycosylase.

Explanation:

Phosphoglucomutase: Convert glucose-6-phosphate to glucose-1-phosphate.

UDP-glucose pyrophosphorylase:  Form UDP-glucose from glucose-1-phosphate.

Glycogen synthase: Add the new glucose from UDP-glucose to the growing glycogen chain.

Amylo-(1,4-1,6)-transglycosylase: This is a branching enzyme, it initiates formation of branches evolving from the main chain.

convalent bond :

is a chemical bond formed by the sharing of electron between 2 atoms.

it is the direct chemical bond between 2 atoms.

in bond formation atoms are involved here.

electrovalent bond:

is a chemical bond defined as electroststic attraction between 2 atoms.

it is the electrostatic attraction between 2 atoms.

in bond formation, ions are involved here.

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