microscope

Question 1

A tool used in magnifying and illuminating specimens that are otherwise invisible to the naked eye

Answer 1

microscope

Question 2

when was microscope developed

Answer 2

1590

Question 3

who invented the microscope

Answer 3

hans and zacharias jansen

Question 4

he described the microscopic appearance of cork and used the term cell to describe the compartments he observed (give the year too)

Answer 4

1667, robert hooke

Question 5

observe living cells under the
microscope, which he named “animalcules” (give year too)

Answer 5

1675, anton von leewenhoek

Question 6

identified the cell nucleus

Answer 6

1830, robert brown

Question 7

who gave rise to the cell theory

Answer 7

matthias schleiden, theodor schwann

Question 8

2 main parts of microscope

Answer 8

mechanical and optical parts

Question 9

optical parts

Answer 9

eyepiece, mirror, objective lens

Question 10

3 types of obj lens and its magnificaiton

Answer 10

Oil immersion objective - 100x
High power objective - 40x
Low power objective - 10x

Question 11

types of microscope

Answer 11

Stereo microscope Compound microscope
Inverted microscope Metallurgical microscope
Polarizing microscope
Optical microscope Electron microscope Scanning probe microscope

Question 12

types of electron microscope

Answer 12

Transmission electron microscope (TEM) Scanning electron microscope (SEM)

Question 13

types of scanning probe microscopes

Answer 13

atomic force microscope
scanning near-field optical microscope

Question 14

simplest optical microscope

Answer 14

magnifying glass

Question 15

the lens at the top that you look through

Answer 15

eyepiece lens

Question 16

magnification power of eyepiece lens

Answer 16

10x

Question 17

connects the eyepiece to the objective lenses

Answer 17

tube

Question 18

supports the tube and connects it to the base. it is used along with the base to carry the microscope

Answer 18

arm

Question 19

the bottom of the microscope used for support

Answer 19

base

Question 20

a steady light source used in place of mirror

Answer 20

illuminator

Question 21

the flat platform where you place your slides. stage clips hold the slides in place

Answer 21

stage

Question 22

this is the part that holds 2 or more objective lenses and can be rotated to easily change power

Answer 22

revolving nosepiece

Question 23

this is an adjustment that determines how close the objective lens can get to the slide

Answer 23

rack stop

Question 24

this is used to focus the microscope. it is always used first and it is used only with the low power objective

Answer 24

coarse adjustment

Question 25

this is used to focus the microscope. it is used with the high power objective to bring the specimen into bette rfocus

Answer 25

fine adjustment

Question 26

microscope care and handling

Answer 26

Transporting ⚬ grab the arm with one hand and place your other hand on the bottom of the base * Handling ⚬ never touch the lens with your fingers * Cleaning ⚬ only use lens paper to clean the glass * Storage ⚬ put the low power objective in place and the stage all the way up

Question 27

used to vary the intensity and size of the cone of light projected upward into the slide

Answer 27

diaphragm/iris