A Level OCR Biology A

What is the equation for magnification? - magnification = image size/actual size What are the pros of using light (optical) microscopes? - Relatively cheap, easy to use, portable for use in field, study whole organisms, view in real time, view in colour What are the cons of using light (optical) microscopes? - Limited magnification (x1500), limited resolution (200nm), difficult to view organisms What are the pros of using laser scanning (confocal) microscopes? - View living cells, view in colour, view in real time, view sections through cell vertically or horizontally What are the cons of using laser scanning (confocal) microscopes? - Magnification and resolution low compared to electron microscopes What are the pros of using transmission electron microscopes? - High magnification (x2 000 000), high resolution (0.1nm) What are the cons of using transmission electron microscopes? - Only vie