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.
Report Abuse. The average age for seniors in highschool is 18. work it down from there. For college it is freshman 18 or 19 and 22 or 23 for college (university) senior in a four year college.est Answer: Well, usually in Elementary School, we have 5 grades: 1st grade, 2nd grade, 3rd grade, 4th grade, and 5th grade. Junior High, or as most people call it Middle School, is: 6th grade, 7th grade, 8th grade. High school is: 9th grade(freshman), 10th grade(sophomore), 11th grade(junior), 12th grade(senior).