The answer is <span>It starts an immune system response that causes a rash.
The active compound in poison ivy that </span><span>protects it from predators is called urushiol. When this compound gets in contact with predator's skin, it activates immune system response of the predator. It is not harmful in low doses, but in higher doses, it is able to suppress some fatty acids, prostaglandins, and other molecules, which further affect body's immune response.</span>
Harmful, i think (filling in the 20 characters)
Answer:
i think its vestigial, but if not then it is homologous.
hope that hepls!
Regulation of amino acids
When amino acids are absorbed by liver cells a series of chemical reactions begins. ... The amine group is reduced to ammonia by the addition of a hydrogen atom. This process is called deamination. The non-nitrogenous portion of the molecule is converted to carbohydrates or fats.
