It is important to note that each type of trailer is not similar to the other types and that the dimension and weight capacity of each is based on the corresponding trucking specifications of a particular semi-tractor and trailer used.
Glucose is a six-memebered ring molecule found in the blood and is usually a result of the breakdown of carbohydrates into sugars. It enters cells through specific transporter proteins that move it from outside the cell into the cell's cytosol. All of the glycolytic enzymes are found in the cytosol.
This requires energy, and one way of providing this is from the oxidation of glucose which is an exergonic reaction. There are two reasons why energy from the oxidation of glucose is not used directly to drive chemical reactions in the cell: the hydrolysis of ATP releases small amounts of energy compared to the oxidation of glucose, and in a controlled way.