The correct answer is antigens and epitope.
An antigen is a substance which triggers an immune response in an organism. This can be either a foreign substance, such as a pathogen, or a specific part of the host organism (in this case this is an autoimmune response). The presence of an antigen activates a specific part of the immune system, called antibody. Each antigen has a specific antibody, which is tailored by the immune system accordingly. More specifically, the antibody has a specific structure, called paratope, which is complementary and binds like a key to a specific structure of the antigen, called epitope.
<span>Facilitated diffusion increases the concentration of phosphate in the cytosol. It happens when the cytosol is 2.0 mM and the concentration of phosphate in the surrounding fluid is 0.1 mM. </span>
Answer:
Environmental scientists gather samples and observational data in the field and conduct tests in the lab. For example, they often analyse water and soil for pollution caused by industry and agriculture. They will test water, soil or air samples to find the type, concentration and source of the pollution.
Explanation:
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<em>I</em><em> </em><em>think</em><em> </em><em>answer </em><em>is</em><em> </em><em>option </em><em>B</em><em>.</em>
