A positively charged ion is called cation.
A negatively charged ion is called anion.
A salt is formed by the ionic bonding of a cation and an anion.
pH is a measure of the hydrogen ion concentration in a solution.
To be frank starch is made up of long chains of glucose. While cell walls are made from cellulose created from photosynthesis. Cellulose is made up of glucose and cell walls are the most abundant carbohydrate.