The Golgi apparatus.
Hope this helps!
To find the correct location for injecting into the Gluteus maximus muscle, expose the buttocks and divide (in your mind) each buttock into four parts. Aim the injection into the upper quarter of the buttock (X on the diagram), towards the hip bone portion but below the iliac crest which is the bony part of the hip.
Show how little things make up bigger things and a microscope or images of microscopic things.
The chlorophyll stops being produced because it is to cold