A researcher is comparing sugar molecules that a cell takes in with amino acid molecules that the cell produces. Highlight all the statements that are true about amino acids but not true about sugars, Always contain carbon
3. an input in glycolysis
C. typically contain nitrogen
D. can be used as an energy source
E can bond together to form proteins

The correct statements for amino acids but not for sugars are :

C. typically contain nitrogen

E can bond together to form proteins

Explanation:

Both Sugars and amino acids always contain carbon molecules and both macromolecules can provide energy so are the source of the energy. Sugar molecule more specifically glucose molecule enters glycolysis during the cellular respiration process.

Amino acids always contain the nitrogen molecule in the structure along with carbon, oxygen, and hydrogen, there is a side chain present. Amino acids are the building blocks of the protein, peptide bonds are formed by amino acids together to make a poly peptide chain of a protein molecule.