Best Answer: In humans there are two. Glycogen, which is a long chain carbohydrate made by polymerising glucose molecules together, is stored in the liver and, in small amounts, in the muscles. It provides a fast boost of energy for short intense exercise.
A freshman is 9th grade - 14 - 15 yrs. old. A junior is in the 11th year of school./ A senior is in the 12th and final year of high school. Ages vary but a junior is 16-17 years old and a senior is 17-18 years old. Junior is 11 grade, senior is 12 grade (for high school) A junior would be around 17 and a senior around 18.
Best Answer: The difference is in the body shape that the clothes are cut to fit. A junior size is cut to fit a young body with fewer curves, smaller bust and less definition between waist and hips. That's why junior size jeans often have that gappy thing going on at the back, when the hips fit the waist is too big.