Multiple choice Which of the following describes the word pathogen? It a protein made by white blood cells that can help destroy microbes which kills, or prevents the growth of bacteria in the body It is the result of a micro-organism entering the body and causing disease It is a micro-organism that can cause a disease which kills, or prevents the growth of bacteria on external parts of the body Reveal answer Fill a bubble to check yourself D Correct answer Explanation A micro organism that can cause a disease is know as pathogen.