This is an image of our lungs. Notice the gas exchange taking place: oxygen in and carbon dioxide out. A similar process takes place in every cell. What cell part is involved with his gas exchange? A) Nucleus
B) Golgi body
C) Plasma membrane
D) Endoplasma reticulum

This is what i found on google“ the monomers combine with each other via covalent bonds to form larger molecules known as polymers. in doing so, monomers release water molecules as byproducts. this type of reaction is known as dehydration synthesis, which means “to put together while losing water. in the process, a water molecule is formed.” i hope this you

The category is the thing that is most simmilar throughout a period