<span>The significance of chitin in arthropods is Chitin is a structural carbohydrate that forms their exoskeleton. </span>
Answer:
a.) units
Explanation:
just took the test and got it right
Answer:
Detects foreign antigens
Explanation:
Antibodies are the defense cells of the body. They are produced by the white blood cells and help in fighting and killing foreign bodies which are known as antigens. The antibodies attacks the antigens by binding onto it and releasing chemicals to kill it or by engulfing the foreign body( antigen).Examples of antibodies are IgA and IgG.
