<span>All cells use oxygen to convert raw food products into energy they can use for health. In the process they make a bi-product which is carbon dioxide and waste material. If there was no cellular respiration the cell would die, because they would be lacking the oxygen needed for food conversion, and they would have no means of getting rid of their waste products.</span>
The answer is C. Mollusks. Hope this helps. :)
Ribosomes make proteins. These structures receive their instructions from the nucleus and are assembled in the nucleolus. Ribosomes can be found attached to the rough ER or within the cytoplasm, either singly or in groups called polyribosomes (poly means many). Hope this helps Ya.
Myelin improves the speed of the neural impulse
Answer:
Proteolytic enzyme, also called protease, proteinase, or peptidase, any of a group of enzymes that break the long chainlike molecules of proteins into shorter fragments (peptides) and eventually into their components, amino acids.