1: Light Microscopes and Drawing Skills Flashcards Preview

IB Biology SL > 1: Light Microscopes and Drawing Skills > Flashcards

Flashcards in 1: Light Microscopes and Drawing Skills Deck (9):
1

Draw and label a light microscope. (p4)

1. eye piece
2. nose piece
3. objective lens
4. stage
5. condenser lens and diaphragm
6. coarse focusing knob
7. fine focusing knob
8. lamp

2

There are 11 steps to follow when using light microscopes. If you can be fucked to learn them good for you, but I can't.

It starts like this:

1. treat the specimen with a stain that makes parts of the cells of the specimen available....

3

Why were microscopes invented?

1. to investigate the structure of cells and tissues

4

What has a higher capacity for magnification: a light microscope or an electron microscope?

1. an electron microscope gives a higher magnification

5

What do you call a photograph taken down a microscope? How else could you record what you see?

1. a micrograph
2. by drawing it

6

How to calculate magnification of a micrograph or drawing.

1. magnifcation = size of image / size of specimen

make sure your units are the same when you divide

7

What is a scale bar?

1. a line added to a micrograph or a drawing to help to show the actual size of the structure

8

What is the relationship between millimeters (mm), micrometers (um) and nanometers (nm)?

1 mm
= 1,000 um
= 1,000,000 nm

9

A micrometer (um) is the smallest S.I size unit you will see on a scale bar. True/False?

1. False
2. a nanometer (nm) is x1000 smaller than a micrometer

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