Every cell in your body.
2. What are the 5 kinds of molecules that move through the cardiovascular
system.
I
3. Compare and contrast veins and capillaries.

capillaries:carry blood away from the body and exchange nutrients waste and oxygen with tissues at the cellular level.

veins:are blood vessels that bring blood back to the heart and drain blood from organs and limbs

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation: