Biology sample question answerWatch
How Many marks do you think I would get for this. I couldn’t find the mark scheme.
Q: Describe how you would prepare a slide for viewing under a microscope. [6 marks ]
My answer: use a pipette to add a drop of water to the slide. Remove a single layer from an onion. Use forceps to place one layer of onion on the slide. Put 2 drops of iodine into the onion. Cover the onion using a coverslip. Place the slide onto the microscope stage. View the slide using the lowest power objective lens. Use the fine adjustment knob to bring the onion tissue into focus. Magnify tissue using higher power objective lens