Can you see insulin and glucose happening inside of your body? Why or why not?

Yes and no. Both glucose and insulin can show up on lab tests for blood, but like every other hormone or cell, you cannot see it since it's so microscopic. You can defiently feel when you have improper insulin to take care of excess glucose such as in people with diabetes, but it's literally impossible to see how much of both are in your body due to their sizes.

Explanation:

Cells

Explanation:

To elaborate, tissue simply means group of cells that are working for the same purpose. So when you say that, cells make up tissues by working together in a group for the same purpose.