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General Zoology (Lab) > Microscope > Flashcards

Microscope Flashcards

1
Q

When was the first compound microscope?

A

1590

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2
Q

He used a compound microscope to observe pores in cork.

A

Robert Hooke

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2
Q

He is the one who termed the word cells.

A

Robert Hooke

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3
Q

He is the 1st to see single-celled organisms.

A

Antoine Van Leeuwenhoek

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4
Q

Antoine Van Leeuwenhoek found single-celled organisms in _____.

A

Water

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5
Q

First microscope, and is most widely used.

A

Compound light microscope

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6
Q

It can have one or two lens. 

A

Compound light microscope

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7
Q

Compound light has around what magnification?

A

2000x

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8
Q

Used to observe VERY small objects: viruses, DNA, parts of cells.

A

Electron microscope

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9
Q

It uses beams of electrons instead of light.

A

Electron microscope

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10
Q

It is more powerful than compound light microscope.

A

Electron microscope

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11
Q

Can magnify up to 100,000x (type of electron microscope).

A

Scanning Electron Microscope (SEM)

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12
Q

Can magnify up to 250,000x (type of electron microscope).

A

Transmission Electron Microscope (TEM)

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13
Q

These are the metal parts of the microscope.

A

Mechanical Parts

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14
Q

The “foot” of the microscope (acts as a support). This may be U, V, or Y in shape.

A

Base

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15
Q

It connects the base to the other parts of the microscope.

A

Pillar

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16
Q

This is the point where a screw is placed at the pillar’s side for tilting the microscopes.

A

Inclination Joint

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17
Q

The platform attached to the lower portion of the arm. The specimen is placed in this area.

A

Stage

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18
Q

The curved structure that connects the lower and upper parts of the microscope. It also serves as the microscope’s handle.

A

Arm

19
Q

It is a big cylindrical structure which allows a considerable distance between the lenses of the ocular or eyepiece and objectives.

A

Body Tube

20
Q

This is a smaller tube which holds the eyepiece or ocular lens.

A

Draw Tube

21
Q

This is the circular structure attached to the area below the body tube that protects the objectives from dust.

A

Dust Shield

22
Q

This is the bigger wheel at one side of the arm.

A

Coarse Adjustment Screw/Knob

23
Q

This is used to move the body tube up & down.

A

Coarse Adjustment Screw/Knob

24
Q

The screw is also used to focus the general image of the object under the LPO.

A

Coarse Adjustment Screw/Knob

25
Q

This is the smaller screw at one side of the arm.

A

Fine Adjustment Screw/Knob

26
Q

It is used to focus the detailed portion of the object under the HPO.

A

Fine Adjustment Screw/Knob

27
Q

These are the magnifying parts of the microscope bearing the lenses.

A

Optical Parts

28
Q

This is the lens found at the opening of the draw tube. This magnifies the secondary image of the object.

A

Eyepiece/Ocular

29
Q

Its magnification varies from 5x - 15x.

A

Eyepiece/Ocular

30
Q

These magnify the primary image of the specimen/object.

A

Objectives

31
Q

With 4x - 10x, the object is seen in its general view.

A

Low Power Objective (LPO)

32
Q

This has greater magnification than the LPO, varying from 45x - 60x. This gives more detailed magnification or image.

A

High Power Objective (HPO)

33
Q

Magnification varies from 90x - 100x, giving a more detailed image than the HPO.

A

Oil Immersion Objective (OIO)

34
Q

This is used when examining bacteria or microorganisms. This uses a special oil (like cedar wood oil).

A

Oil Immersion Objective (OIO)

35
Q

This is attached to the pillar by the mirror fork, and is seen below the stage.

A

Mirror

36
Q

Used with daylight illumination (high intensity light).

A

Plane/Flat Mirror

37
Q

Uses artificial light (low intensity light).

A

Concave Surface

38
Q

Iris diaphragm and abbe condenser are parts of the?

A

Substage

39
Q

This regulates the amount of light to obtain a clearer view of the object. This is a round structure beneath the stage.

A

Iris Diaphragm

40
Q

It is provided with a protruding metal which can be moved to increase/decrease the opening’s diameter.

A

Iris Diaphragm

41
Q

In other types of microscope, the iris diaphragm is not present; rather, it is substituted by a circular disc with several openings called _____ _________.

A

Wheel Diaphragm

42
Q

This is a lens system which concentrate light rays upon the object.

A

Abbe Condenser

43
Q

Increase of an object’s apparent size.

A

Magnification (x)

44
Q

Power to show details clearly.

A

Resolution

General Zoology (Lab) (4 decks)

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