Defensive proteins produced by the body are called

Defensive proteins produced by the body are called Antibodies.

Explanation:

Antibody is also known as immunoglobulin proteins produce by immune system to neutralize pathogens such as bacteria, viruses and other chemicals, these are called Antigens.

Antibodies are produced by white blood cells (B-cells) to match the antigen. Each type of antibody matches with only one antigen.

There are 5 types of antibody molecules found in serum : IgG, IgM, IgA, IgE and IgD.

this would be a math

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.