The r group or side chain of the amino acid serine is –ch2 -oh. the r group or side chain of the amino acid alanine is – ch3 . where would you expect to find these amino acids in a globular protein in aqueous solution?

you need to have a picture of the atom that way we can answer it

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.