Flashcards in Slides And Photomicrographs Deck (10):
What can an optical microscope be used to observe? (3)
Living organisms (amoeba)
Smear preparations of human blood and cheek cells
Thing sections of animal, plant and fungal tissue
What is light interference?
A way of observing a specimen without staining
What does light interference involve?
Dark background against which illuminated specimens show up
What stain is used to colour chromosomes dark red?
What is used to stain the cytoplasm of a cell?
What does Sudan red stain?
Iodine in potassium iodide stains starch blue/black. What colour does it stain cellulose?
What happens to a specimen during the preparation process? (4)
Embedded in wax
Special instrument makes small slices called sections
Stained and mounted in chemicals to preserve
Why are specimens embedded in wax?
To prevent distortion