8154503
Description
Flashcards by Nova Kozma, updated more than 1 year ago
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Created by Nova Kozma
over 8 years ago
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| Question | Answer |
| What do microscopes allow us to see that we couldn't see before? | Unicellular organisms or small organisms in detail, and how their structures relate to their functions |
| What can we see with light microscopes? | Living or dead organisms, prepared specimens |
| How many lenses are on a compound light microscope? | 2- the objective lens (placed near the specimen) and the eyepiece lens (the one you look through) |
| What is chromatic abberation? | An unfocused, fringed image produced by wavelengths of different angles when a lens is unable to bring the wavelengths to the same focal pane |
| What are the names of the bigger, less accurate focusing knob and the smaller, more accurate focusing knob? | The coarse-focusing knob and fine-focusing knob |
| What is another (better) name for a red blood cell? | An erythrocyte |
| What is another (better) name for a white blood cell? | A leucocyte |
| What is the calculation for magnification? | Magnification = size of image/actual size of object |
| What is the calculation for actual size of an object? | Actual size = size of image/magnification |
| What is the calculation for size of image? | Size of image = actual size x magnification |
| Calculate how many nanometres are in 2778 centimetres (standard form) | 2.778 x 10^10 |
| Explain why eyepiece graticules do not have units | Because the objective lens can change the magnification of the image, so the eyepiece units would be different |
| What are the two types of electron microscopes? | TEM- Transmission electron microscope, and SEM- Scanning electron microscope |
| What is the difference between a lymphocyte and a leukocyte? |
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