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.
Junior(adj) less advanced in age than another; younger. Junior(adj) lower in standing or in rank; later in office; as, a junior partner; junior counsel; junior captain. Junior(adj) composed of juniors, whether younger or a lower standing; as, the junior class; of or pertaining to juniors or to a junior class. See Junior, n., 2 Junior (noun)