Microscopy and the Discovery of the Cell

Question 1

Son of Hans Janssen

Answer 1

Zacharias Janssen

Question 2

father of Zacharia Janssen

Answer 2

Hans Janssen

Question 3

who discovered that the combination of two lenses in a particular arrangement was the secret of the better visualization and magnification of objects.

Answer 3

Hans Janssen and Zacharias Janssen

Question 4

Who invented what would become the prototype for the compound miscroscope

Answer 4

Hans Janssen and Zacharias Janssen

Question 5

when was the microscope first modified?

Answer 5

17th century

Question 6

who modified the microscope during the 17th century

Answer 6

Robert Hooke

Question 7

an english scientist and mechanical genius who pioneered the microscopic research

Answer 7

robert hooke

Question 8

recognized as the English Father of microscopy

Answer 8

Robert Hooke

Question 9

coined for the discovery of the cell in which he described it as looked like small monastery rooms.

Answer 9

robert hooke

Question 10

who is the dutch maker of microscopes that was the first person to see live cells in 1665 using a microscope that he himself made

Answer 10

Antonie Van Leeuwenhoek

Question 11

who was able to grind and polish purer glass rather than the poor quality, greenish glasses commonly used in his time into a lens

Answer 11

Antonie Van Leeuwenhoek

Question 12

through his microscope, he made pioneeribg discoveries on protozoa, red blood cells, capillary systems, and life cycle of insects.

Answer 12

Antonie van leeuwenhoek

Question 13

who’s invention paved the way fot he development of the world’s first practical microscope

Answer 13

Antonie Van Leeuwenhoek

Question 14

what did Antonie Van Leeuwenhoek discover through his microscope?

Answer 14

protozoa
red blood cells
capillary systems
life cycle of insects
rotifers
bacteria
sperm cells

Question 15

who made the hand-held microscope

Answer 15

antonie van leeuwenhoek

Question 16

1st person to see a live cell

Answer 16

antonie van leeuwenhoek

Question 17

1st person to discover cells

Answer 17

robert hooke

Question 18

what did robert hooke use as a subject for his microscope

Answer 18

a cork

Question 19

what did robert hooke base the term ‘cells’ on

Answer 19

the cells of a monastery

Question 20

what was the key for more magnification

Answer 20

lenses with very short magnification

Question 21

what improved both the resolution and magnificationbof the compound microscope

Answer 21

double convex and spherical lenses

Question 22

who discovered tubercle and cholera bacilli

Answer 22

Robert Koch

Question 23

what did Robert Koch discover

Answer 23

tubercle and cholera bacilli

Question 24

a German physician and microbiologist who was among the monumental discoviers in microbiology

Answer 24

Robert Koch

Question 25

what microscope now has a greater magnifying power and greater resolution

Answer 25

modern electron microscopes

Question 26

what microscope uses beams of accelerated electrons as a source of illumination

Answer 26

electron microscope

Question 27

what microscope uses electrostatic and electromagnetic lenses in forming the image by controlling the electron beam to focus it at a specific plane with a reference of specimen

Answer 27

electron microscope

Question 28

What are the two parts of Jansenn’s microscope

Answer 28

objective and eyepiece

Question 29

What major discovery was discovered by Robert Koch that also paved the way in improving the future microscopes?

Answer 29

two infectious bacteria, tubercle and cholera bacilli

Question 30

This is also known as the body

Answer 30

Head

Question 31

it carries the optical parts in the upper part of the microscope.

Answer 31

Head

Question 32

acts as microscopes support.

Answer 32

Base

Question 33

carriers the microscopic illuminators.

Answer 33

Base

Question 34

the part connecting the base to the head and the eyepiece tube to the base of the microscope

Answer 34

Arms

Question 35

It gives support to the head of the microscope and it also used when carrying the microscope.

Answer 35

Arms

Question 36

True or False: Some high-quality microscopes have an articulated arm with more than one joint allowing more movement of the microscopic head for better viewing.

Answer 36

True

Question 37

True or False: Some low-quality microscopes have an articulated arm with more than one joint allowing more movement of the microscopic head for better viewing.

Answer 37

False

Question 38

also known as the ocular.

Answer 38

Eyepiece

Question 39

used to look through the microscope.

Answer 39

Eyepiece

Question 40

found at the top of the microscope

Answer 40

Eyepiece

Question 41

what is the standard magnification of the eyepiece

Answer 41

10x

Question 42

the standard magnification of the eyepiece is 10x an optional eyepiece having magnification from

Answer 42

5X – 30X

Question 43

It’s the eyepiece holder.

Answer 43

Eyepiece tube

Question 44

It carries the eyepiece just above the objective lens.

Answer 44

Eyepiece tube

Question 45

True or False: In some microscopes such as the binoculars, the eyepiece tube is flexible and can be rotated for maximum visualization, for variance in distance.

Answer 45

True

Question 46

True or False: the eyepiece of every microscope's tube is flexible and can be rotated for maximum visualization, for variance in distance.

Answer 46

False

Question 47

the eyepiece tube of these microscopes are none flexible

Answer 47

monocular microscopes

Question 48

major lenses used for specimen visualization

Answer 48

Objective lenses

Question 49

They have a magnification power of 40x-100X

Answer 49

Objective lenses

Question 50

True or False: There are about 1- 4 objective lenses placed on one microscope, in that some are rare facing and others face forward.

Answer 50

True

Question 51

True or False: Each lens has its own magnification power.

Answer 51

True

Question 52

True or False: All lens has the same magnification power.

Answer 52

False

Question 53

revolving turret.

Answer 53

Nose piece

Question 54

It holds the objective lenses.

Answer 54

Nose piece

Question 55

It is movable hence it can revolve the objective lenses depending on the magnification power of the lens.

Answer 55

Nose piece

Question 56

knobs used to focus the microscope

Answer 56

The Adjustment knobs

Question 57

What are the two types of adjustment knobs

Answer 57

fine adjustment knobs coarse adjustment knobs.

Question 58

the section on which the specimen is placed for viewing

Answer 58

Stage

Question 59

have stage clips hold the specimen slides in place

Answer 59

Stage

Question 60

The most common stage is

Answer 60

mechanical stage

Question 61

what allows the control of the slides by moving the slides on the stage instead of moving it manually.

Answer 61

mechanical knobs

Question 62

a hole on the microscope stage

Answer 62

Aperture

Question 63

the microscopes light source, located at the base

Answer 63

Microscopic illuminator

Question 64

used instead of a mirror

Answer 64

Microscopic illuminator

Question 65

used instead of a mirror

Answer 65

Microscopic illuminator

Question 66

lenses that are used to collect and focus light from the illuminator into the specimen

Answer 66

Condenser

Question 67

found under the stage next to the diaphragm of the microscope

Answer 67

Condenser

Question 68

play a major role in ensuring clear sharp images are produced with a high magnification of 400X and above

Answer 68

Condenser

Question 69

True or False: The higher the magnification of the condenser, the more the image clarity

Answer 69

True

Question 70

True or False: The lower the magnification of the condenser, the more the image clarity

Answer 70

False

Question 71

also known as the iris

Answer 71

Diaphragm

Question 72

found under the stage of the microscope and its primary role is to control the amount of light that reaches the specimen.

Answer 72

Diaphragm

Question 73

an adjustable apparatus, hence controlling the light intensity and the size of the beam of light that gets to the specimen

Answer 73

Diaphragm

Question 74

True or False: high-quality microscopes, the diaphragm comes attached with an Abbe condenser and combined they are able to control the light focus and light intensity that reaches the specimen.

Answer 74

True

Question 75

True or False: mid-quality microscopes, the diaphragm comes attached with an Abbe condenser and combined they are able to control the light focus and light intensity that reaches the specimen.

Answer 75

False

Question 76

a knob that moves the condenser up or down thus controlling the focus of light on the specimen.

Answer 76

Condenser focus knob

Question 77

a condenser specially designed on high-quality microscopes

Answer 77

Abbe Condenser

Question 78

what makes the condenser to be movable and allows very high magnification of above 400X

Answer 78

Abbe Condenser

Question 79

True or False: high-quality microscopes normally have a high numerical aperture than that of objective lenses.

Answer 79

true

Question 80

True or False: mid-quality microscopes normally have a high numerical aperture than that of objective lenses.

Answer 80

false

Question 81

controls how far the stages should go preventing the objective lens from getting too close to the specimen slide which may damage the specimen

Answer 81

The rack stop

Question 82

responsible for preventing the specimen slide from coming too far up and hit the object.

Answer 82

The rack stop