Where in the cell are the chromosomes lined up during metaphase? Bottom of the cell?
Top of the cell?
At the ends of the cell?
In the middle of the cell?

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?