Microscope and Cell Theory

Question 1

Eyepeice

Answer 1

To look through, contians magnifying glass

Question 2

Revolving Nosepeice

Answer 2

To change the magnification

Question 3

Coarce Adjustment knob

Answer 3

To focus the object, move the stage up or down

Question 4

Fine Adjustment Knob

Answer 4

Focus object, move the stage up or down slightly

Question 5

Stage

Answer 5

To put the slide on

Question 6

Stage Clips

Answer 6

To hold the slide down

Question 7

Diaphram

Answer 7

To adjust the amount of light

Question 8

Light

Answer 8

To see the object

Question 9

Base

Answer 9

Holds the microscope

Question 10

Arm

Answer 10

To carry the object

Question 11

Low, medium, and high objective lens

Answer 11

magnify your objects

Question 12

Hooke

Answer 12

Discovered and named cells, 1663

Question 13

Van Loewenhoek

Answer 13

First to discover microscopic creatures (‘animlcules’), 1660’s

Question 14

Schleiden

Answer 14

said all plants are made of cells, 1838

Question 15

Schwann

Answer 15

said all animals are made of cells, 1839

Question 16

Virchow

Answer 16

said that living things only come from other living things, 1855

Question 17

3 main ideas of cell theory

Answer 17

All living things are composed of cells, cells are the basic units of structure and function in living things, all cells come from pre-existing cells

Question 18

Light Microscopes

Answer 18

uses light to veiw objects, simple or compound, small and portable, can magnify up too 100,000 times, very good resolution, can only see living and dead things

Question 19

Electron Microscopes

Answer 19

uses beam of electrons to view object, scanning and transmittion, magnify up to 100,000 times, very good resoultion, can can only see dead things

Question 20

Low power vs High power

Answer 20

Low power: you can see more of the overall image, less detail
High power: you can see less overall image, more detail

Question 21

Find total magification of the comound microscope if given magnifications of the ocular and objective lenses.

Answer 21

Multiply the magnification of the eyepiece times the magnification of the objective lens to get the total magnification.
Example: low power in our microscopes: 10x4=40X