Ferritin is an intracellular protein storing iron. It is found in hemoglobin that aids in metabolism function. Meanwhile, glycogen is a carbohydrate consist of glucose which can be hydrolyzed if needed. The answer then is that both ferritin and glycogen functions by storing the materials needed by an organism like humans.
An igneous rock can be formed from cooled magma. The igneous rock can become sedimentary if it is broken down by wind or water. The sedimentary rock can become metamorphic if it becomes buried in the earth, where pressure and heat would turn it into a metamorphic rock. The metamorphic rock can then become an igneous rock by melting underground and turning into magma, flowing out of a volcano, and cooling.
Well in order for chemical digestion to occur period, a enzyme is needed.
In the mouth this enzyme is amylase
Pro I
Meta I
Ana I
Telo I
Pro II
Meta II
Ana II
Telo II