C
The respiratory system removes the waste carbon dioxide produced from aerobic respiration in the body.
A way scientist answer questions and solve problems
<span>To break a protein down into its amino acids you will need enzymes. Enzymes
are biological molecules (proteins) that act as catalysts and help
complex reactions occur everywhere in life. Let's say you ate a piece of
meat. Proteases would go to work and help break down the peptide bonds between the amino acids.
</span>
Where are the answer choices?