Biology report - can you put diagrams/pictures in the introduction?

Question

My friend said I shouldn't, but if I am describing a signaling pathway, would it not make sense to visually see it next to the text? She said it should be put at the back in an appendix.

Answer 1

In the introduction, you should be simply stating what you will be discussing in the paper.  You need to make the reader trust that you know what you'll be discussing, adding a picture or diagram so early on won't do this.

Answer 2

not in the introduction but you can put it in the body of the report