Bio. Ch. 7 Microscope

Front 1

light

Back 1

This type of microscope uses a beam of light passing through one or more lenses to produce an enlarged image of the object being viewed

Front 2

compound

Back 2

This type of microscope uses two or more lenses

Front 3

objective

Back 3

This lens first magnifies the specimen; there are three of these types of lenses on our class microscopes (low, medium, and high power)

Front 4

eyepiece

Back 4

This lens further magnifies the magnified image produced by the objective

Front 5

4x

Back 5

What is the magnification power of the low-power objective lens?

Front 6

10x

Back 6

What is the magnification power of the medium-power objective lens?

Front 7

40x

Back 7

What is the magnification power of the high-power objective lens?

Front 8

10x

Back 8

What is the magnification power of the eyepiece lens?

Front 9

ocular

Back 9

What is another name for the eyepiece lens?

Front 10

40x

Back 10

What is the TOTAL magnification power of the microscope when it is on the low-power objective lens?

Front 11

100x

Back 11

What is the TOTAL magnification power of the microscope when it is on the medium-power objective lens?

Front 12

400x

Back 12

What is the TOTAL magnification power of the microscope when it is on the high-power objective lens?

Front 13

2000x

Back 13

What is the TOTAL magnification power of the most powerful light microscopes?

Front 14

magnification

Back 14

This term refers to the number of times larger an object appears to be when viewed through a lens

Front 15

resolution

Back 15

This term refers to the ability of the microscope to distinguish details

Front 16

multiply the magnification power of the eyepiece lens by the magnification power of the objective lens

Back 16

What is the formula used to compute the magnitude of magnification?

Front 17

power

Back 17

Numbers on the lenses, such as "10X", are read as 10 what?

Front 18

reversed and inverted

Back 18

What happens to the direction of the image produced by compound microscopes?

Front 19

convex

Back 19

What shape of lens causes microscopes images to appear backwards and upside down?

Front 20

arm, base

Back 20

When carrying a microscope, what two parts should you hold on to?

Front 21

stage

Back 21

The name of the flat platform on a microscope

Front 22

stage clips

Back 22

These are used to hold the slide in place

Front 23

cover slip

Back 23

Name of the small plastic piece you put on top of a microscope slide to cover the specimen

Front 24

high power

Back 24

Longest of the objective lenses

Front 25

low power

Back 25

Shortest of the objective lenses

Front 26

diaphragm

Back 26

Name of the opening that adjusts the amount of light being projected onto the slide

Front 27

coarse adjustment

Back 27

Large microscope knob used to bring the object into view; used first

Front 28

fine adjustment

Back 28

Small microscope knob; used to focus the microscope

Front 29

coarse adjustment

Back 29

To avoid accidentally breaking a microscope slide, it is a good rule to never use which knob when on high power?

Front 30

vacuum

Back 30

Because electrons can collide with air particles and scatter, specimens must be examined in what type of conditions inside of an electron microscope?

Front 31

200,000x

Back 31

What is the TOTAL magnification power of a Transmission Electron Microscope (TEM)?

Front 32

100,000x

Back 32

What is the TOTAL magnification power of a Scanning Electron Microscope (SEM)?

Front 33

transmission

Back 33

Specimens must be dead, sliced very thin, and stained in order to use which type of electron microscope?

Front 34

scanning

Back 34

Specimens must be dead and coated with a thin layer of metal in order to use which type of electron microscope?

Front 35

scanning

Back 35

Which type of electron microscope is used to reveal reveal three-dimensional surface details?

Front 36

transmission

Back 36

Which type of electron microscope is used to reveal internal structures?

Front 37

scanning tunneling

Back 37

What type of microscope uses electrons to create computer images of atoms on the surface of molecules?

Front 38

wet mount

Back 38

Procedure in which a microscope sample is placed under a drop of water

Front 39

air bubbles

Back 39

When making a wet mount, you must lower the cover slip at an angle to avoid making these

Front 40

staining

Back 40

Procedure in which dye is added to a microscope sample to preferentially stain certain cell components

Front 41

methylene blue

Back 41

A chemical that stains animal cells to make nuclei more visible