Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: What type of waste is eliminated from the body through the anus? Answer: solid
solid waste that remains after food is digested and is eliminated from the body through the anus.

Question: Plant cells have structures that animal cells? Answer: lack
Plant cells have structures that animal cells lack. What important process takes place in plant cells but not in animal cells that might explain their differences?.

Question: What does the structure of a protein start with? Answer: amino acids
Protein Structure. The structure of a protein starts with its sequence of amino acids. What determines the secondary structure of a protein? What are two types of secondary protein structure?.