The answer would be a.
Biological catalysts are generally proteins (and a group of RNA molecules called ribozymes), but carbohydrates do not play such a role.
Kidneys couldn’t work without the liver because water wouldn’t leave the body.
Hope this helps!
~Brooke❤️
Negative ion <span>occurs when an atom gains an electron (negative charge) it will have more electrons than protons.</span>
