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Bacteriology > Lab 1 > Flashcards

Lab 1 Flashcards

1
Q

A device used to examine small objects or the fine and detailed structure of larger objects

A

Microscope

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2
Q

It is the primary tool of the microbiologist and knowledge of microscopy is essential to those engaged in studying microorganism

A

Microscope

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3
Q

One that makes use of single convex lens and has limited capacity of magnifying an object

A

Simple microscope

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4
Q

It is often used as an aid in dissecting multi-cellular organisms

A

Simple microscope

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5
Q

Make use of a system of lenses-the ocular lens and the objective lens

A

Compound microscope

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6
Q

Mechanical parts”

A
  1. Base
  2. Handle/Arm
  3. Draw tube
  4. Revolving nosepiece
  5. Adjustment knobs
  6. Stage
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7
Q

May be Y- or U- shaped stand that supports the microscope. This ensures that the microscope is planted firmly

A

Base

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8
Q

Where all other parts are connected-stage, objectives, and neck. It is used in holding the microscope.

A

Handle/Arm

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9
Q

Upper and smaller end of the body tube bearing the eyepiece or ocular

A

Draw tube

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10
Q

Circular structure at the lower end of the body tube to which the objectives are attached.

A

Revolving nosepiece

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11
Q

This is often covered by a circular structure called dust shield, which protect the objectives and the specimen from dust

A

Revolving nosepiece

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12
Q

This is often covered by a circular structure called dust shield, which protect the objectives and the specimen from dust

A

Revolving nosepiece

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12
Q

Circular structure at the lower end of the body tube to which the objectives are attached.

A

Revolving nosepiece

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13
Q

Two pairs of wheels attached to either side of the body tube.

A

Adjustment knobs

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14
Q

Kind of knob that has bigger wheels used to adjust the low power and scanning objectives

A

Coarse adjustment knob

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15
Q

Kind of know that has smaller wheels used for delicate focusing in connection with higher power and oil immersion objectives. It is also used to make specimen more clear and vivid

A

Fine adjustment knob

16
Q

Square platform where specimen is placed for observations.

A

Stage

17
Q

Under the Illumination and Magnification Parts

A
  1. Ocular or Eyepiece
  2. Illuminator
  3. Iris diaphragm
  4. Condenser
  5. Objectives
18
Q

Found on the draw tube through which the operator peeps during actual focusing

A

Ocular or Eyepiece

19
Q

Serve as a light source. The intensity of light is often adjustable with a switch.

A

Illuminator

20
Q

What mirror is used when viewing specimen in bright or natural light conditions

A

Flat mirror

21
Q

Found below the stage consisting of regularly arranged circular blades. Used to regulate a central opening to decrease or increase the light reflected on the object

A

Iris diaphragm

22
Q

A lens found immediately beneath the hole of the stage. It is used to concentrate light rays on the specimen.

A

Condenser

23
Q

Tube-like structures attached to the revolving nosepiece. This is often lenses are often equipped with a spring device to prevent damage to the lens in case it accidentally touches the specimens.

A

Objectives

24
Q

The objectives are ____, means that the focus of the different objective lenses have been adjusted such that they occur at the same distance.

A

Parfocal

25
Q

It is usually shorter than the other two objectives and it usually forms the general outline or wider portion of the object

A

LPO

26
Q

It is longer than the LPO. It forms a bugger image of the object in focus and is used to examine living microorganisms suspended in drops of water.

A

HPO

27
Q

In most cases it is used to enlarge specimens that are so small under LPO

A

HPO

28
Q

It has the highest degree of magnification and is used to examine stained smear preparations of microorganisms using immersion oil as their medium

A

OIO

29
Q

What mirror is used when there is a little light available

A

Concave mirror

30
Q

Refers to the removal or destruction of all forms of life, including bacterial spores present on an item or equipment or in a solution

A

Sterilization

31
Q

Refers to reduction or inhibition of microorganism which likely cause infection

A

Disinfection

32
Q

Can be attained by heat (moist and dry), radiation, filtration, and chemical

A

Sterilization

33
Q

Can be done mostly by chemical agents

A

Disinfection

34
Q

Aims to inhibit or kill microbes by one or more modes of action that include reaction on the components of cytoplasmic membrane, denaturation of cellular proteins and alteration on properties of nucleic acids

A

Disinfection

Bacteriology (13 decks)

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