Answer:
Glucose: is a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.
Fructose: or fruit sugar, is a simple ketonic monosaccharide found in many plants.
Deoxyribose: sugar derived from ribose by replacing a hydroxyl group with hydrogen.
Ribose: is a kind of sugar that is produced by the body. It is used as a medicine. Ribose is used for heart disease, mental function, athletic performance, chronic fatigue syndrome (CFS), fibromyalgia, and many other conditions, but there is no good scientific evidence to support these uses.
Glyceraldehyde (glyceral) is a triose monosaccharide with chemical formula 
Explanation:
 
        
             
        
        
        
To be able to compare the results to a sample without any of the independent variable added.
        
                    
             
        
        
        
Digestive system occurs when youthe nutrients move from the digestive system into the blood system
        
             
        
        
        
The answer is D. Both a and c