Microscopy (GCSE Biology)

Which microscope type would you choose if you need to see the surface topography and 3D shape of a specimen at high resolution?

A student places a cover slip on a wet mount by lowering it at an angle. What is the main reason for doing this?

Which of the following is an appropriate safety measure when cutting thin sections of tissue with a knife?

What is the main limitation of a light microscope compared with an electron microscope?

When drawing cells observed under a microscope for assessment, which practice is recommended?

An eyepiece has magnification ×10 and you use a ×40 objective. What is the total magnification?

A biology student observes a prepared slide and notes many air bubbles under the cover slip. How will the bubbles most likely affect the observation?

A pupil measures the diameter of the field of view at ×40 objective as 4.8 mm. If they switch to a ×100 objective (same eyepiece), what will be the new diameter of the field of view (approx)?

Which feature of onion epidermal cells makes them especially suitable for study under a light microscope?

A photomicrograph shows a scale bar of 50 µm. If an organelle measures half the length of that scale bar in the picture, what is its real size?

A student wants to calculate the magnification of a drawing made from a microscope image. Which equation should they use?