Indicate the class I pathway that is the source for each component of UMP and AMP biosynthesis. Indicate the number of times each class I pathway must run to provide the combined synthesis of 1 molecule of UMP and AMP and describe how you arrived at this number. *Consider the glucose-6-phosphate --> ribose-5-phosphate to represent the Pentose phosphate pathway.*

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic 

Noble gases is far right