1.4 carbohydrates and lipids

Define the term isomer
Relate the chemical structure of carbohydrates to their physical properties and uses
Compare the polarity of carbohydrates and lipids. How does their polarity relate to their physical properties?
Why are most polysaccharides insoluble in water?
Distinguish between a fatty acid and a fat.
What happens to the acidic properties of a fatty acid when a fat is formed?
Why are steroids important, even though they tend to have a bad reputation?