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.
Definition of Freshman, Sophomore, Junior, and Senior. For undergraduate day students, freshman, sophomore, junior, and senior standing are determined by earned semester hours: Freshman: Less than 32 SH. Sophomore: At least 32 SH but less than 64 SH. Junior: At least 64 SH but less than 96 SH.