The carbon dioxide breathed out is a by-product of the process of cell respiration, as is water. In this process, energy is produced in the mitochondria of cells. This energy is our physical "life force". Both oxygen and glucose are required for this.
Answer:
The plasma membrane is responsible for maintaing B: homeostasis
Peptides<span>. A </span>peptides<span> is a molecule composed of two or more amino acids. The bond that holds together the two amino acids is a </span>peptide bond<span>, or a covalent chemical bond between two compounds (in this case, two amino acids).</span>
