#1, they remain outside the target cell. #2, bind to the receptors inside the target cell. #3, they have no target cells. #4, are made of proteins.
C. Take a look at the pic below for the reasoning
<em>You could be passing though of someone or something cause...like say </em>
<em>-You had been lied to from a friend ..your thinking of beating your friend up </em>
<em>-You could of have been picked on by the popular kids at school..You want to confront the popular kids that you have had enough !</em>
<em>-You could of have gotten your arm broken by someone twisting it and not saying sorry....You want to tell on that kid</em>
<em>I hoped these answer helped you!</em>
<em>Please thank if possible and have a nice day !</em>
<em>Thank you!</em>
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Are there any multiple choice answers?
Answer:
a chemical process in which substances act mutually on each other and are changed into different substances, or one substance changes into other substances.