Background
A metabolic pathway is a series of metabolic reactions chained together. Examples of metabolic pathways include the conversions of glucose into energy and cholesterol into steroid hormones.
The image below is a first introduction to depicting pathways using our WikiPathways format: Metabolites are blue and Gene Products are black. The
conversion from one Metabolite to another is indicated by a line with a solid arrowhead pointing to
the reaction product: 
. The protein enzymes that catalyze each reaction are Gene Products and
are connected to the conversion lines by a catalysis line that ends with an open circle: 
.
Challenge
