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Zoology Lab > Microscope:lab > Flashcards

Microscope:lab Flashcards

1
Q

T/f The microscope revolutionized the way zoologist study, identify, classify, an describe small members of the kingdom animalia

A

t

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2
Q

T/f Microscope doesn’t enable research entities

A

False

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3
Q

T/f simple microscope is similar to the magnifying glass for it is composed of one lens only

A

True

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4
Q

What kind of microscope that is similar to magnifyingglass that has one lens only?

A

Similar microscope

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5
Q

What kind of microscope that has 2 lenses at the opposite ends of tube?

A

Compound microscope

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6
Q

Type of a lens that is close to the eye?

A

ocular lens

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7
Q

Type of a lens that is near the specimen

A

objective lens

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8
Q

T/F: the enlarged and magnified views of microscopic species allows you to examine their minute structures

A

T

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9
Q

Most microorganisms studied under a microscope are measured in? which is?

A

Micrometer: 1/1000 millimeter

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10
Q

Is useful when viewing a whole specimen of small organisms or separate body parts

A

dissecting microscope

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11
Q

What kind of microscope is used if the highly recommended magnification desired is 5x to 50x?

A

dissecting microscope

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12
Q

what kind of microscope that has 2 ocular lens

A

Binocular microscope

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13
Q

It is the space you see when you look into a microscope?

A

field of view

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14
Q

A light source in the microscope can be directed two ways: What are those?

A

downward onto the object and up through the object.

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15
Q

T/f by enabling the transmission light, you can visualize objects that are thin?

A

False

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16
Q

T/f you can zoom in or out an object if your microscope has knobs on its side

A

true

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17
Q

what is the proper way to carry dissecting microscope?

A

You should carry dissecting microscope by its arm using one hand and support the base by your other hand.

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18
Q

What are 6 parts of dissecting microscope?

A

light switch
illumination control knob
oculars
zoom knob
stage
focus knob

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19
Q

what turns on the illuminator?

A

light switch

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20
Q

what function that rotates to enable reflection or transmission of light?

A

illumination control knob

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21
Q

refers to the light that travels in an upward direction to the specimen?

A

transmission

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22
Q

refers to the light directed on a downward direction to the specimen?

A

reflection

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23
Q

T/f you can get the best illumination for your specimen if you rotate the knob when visualizing

A

t

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24
Q

move together or apart to allow adjustment according to your own level of comfort when looking into the microscope?

A

oculars

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25
Q

T/f the two fields of ocular should overlap completely so that you see a single circle of light

A

t

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26
Q

it allows you to control magnification and is found next to oculars?

A

zoom knob

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27
Q

is where you place your slide which contains the specimen you will be examining

A

stage

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28
Q

it can turn for sharpness of focus

A

focus knob

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29
Q

t/f specimens are placed directly on the stage of the microscopes?

A

False: fixed on the slide

30
Q

where should the specimen are placed?

A

glass slide

31
Q

what are the materials in dissecting ampalaya seed?

A

dissecting microscope
ampalaya seed
glass slide

32
Q

What are the procedures in dissecting ampalaya?

A

1.) put ampalaya seed on the slide and focus under the dissecting microscope
2.) switch on the light to illuminate the specimen and rotate illuminating knob while looking through the oculars.
3.) move the zoom knob to control magnification.
4. draw the seed seen under the the dissecting microscope.

33
Q

What are the parts of a compound microscope?

A

Mechanical
- arm, base, stage, stage clips, pillar, nosepiece, body tube, coarse adjustment knob,, light source, fine adjustment knob, iris diaphragm, draw tube
- Optical
-ocular lens or eye piece, objective lenses, condenser, iris diaphragm, mirror/bulb.

34
Q

serves to support the body tube?

35
Q

provides firm and steady support to the entire microscope?

36
Q

is where the slide is placed

37
Q

T/f It is important to grasp the microscope by the arm when transferring the microscope to another place.

38
Q

how to hold a compound microscope?

A

keep it upright and the underneath using a free hand

39
Q

what is the purpose of the hole in the stage?

A

so that light can shine up through the specimen

40
Q

it holds the specimen firmly on stage

A

stage clips

41
Q

is the support or post of the base where the arm is attached

42
Q

is the revolving part to which the objectives are attached?

43
Q

T/f it is necessary to firmly click (nosepiece) it into position when the objective is changed?

44
Q

connects the nosepiece to the ocular lens

45
Q

moves the body tube or stage in an upward or downward direction?

A

coarse adjustment knob

46
Q

coarse adjustment know is utilized only with?

A

lowpower or scanning objectives

46
Q

moves either the body tube or stage in an upward or downward direction to correctly position that specimen so that it can be focused perfectly.

A

fine adjustment knob

47
Q

is usually a small electric light beneath the stage ?

A

light source

48
Q

it can be used to reflect light from another source into the microscope?

49
Q

regulates how much light and lamp heat pass through the specimen

A

iris diaphragm

50
Q

is the small cylinder attached to the upper part of the body tube that holds the ocular

51
Q

is a detachable cylinder located at the upper end of the tube?

A

ocular lens or eyepiece

52
Q

what are the 4 objective lenses in a microscope?

A

scanner
low power objective
high power objective
oil immersion objective

53
Q

what is the magnification for LPO, HPO, OIO, AND SCANNER?

A

SCANNER- 5-10X RED
LPO- 10-15X YELLOW
HPO- 40-60X BLUE
OIO- 1000X- WHITE

54
Q

is a lens located at above the diaphragm and concentrates light before passing through specimen?

55
Q

2 kinds of mirror or bulb? and explain

A

flat(natural source) and concave(artificial light)

56
Q

is used to collect light and direct it to the object an reflect it to the eyes

57
Q

is the preferred method of specimen preparation?

58
Q

t/f wet mount can oly be used for a short duration since it dries out faster

59
Q

what are the materials for preparing wet mount?

A

compound microscope
hay infusion (canal water)
glass slide
cover slip
lens paper
dropper
teasing needle
ruler

60
Q

what is the procedure for wet mount?

A

prepare the glass slide, cover slip and teasing needle. second, put a dropr of hay infusion or canal water on the center of glass slide. next, gently cover it with a cover slip with ur thumb and your slide us now ready for viewing under microscope.

61
Q

what are the materials in viewing the letter e?

A

compound microscope, prepared slide of the letter e
glass slide
cover slip
lens paper

62
Q

what are materials in using oil immersion

A

prepared slides of bacteria
immersion oil

63
Q

what do use to remove oil off the lens?

A

use lens paper with xylene

64
Q

are 2 important concepts to comprehend when viewing tiny object?

A

mangnification and resolution

65
Q

t/f: when an object is greatly magnified, its image can be fuzzy

66
Q

is the measure of how clearly one can visualize details under microscope

A

resolution

67
Q

what is the total magnification?

A

ocular lens multiplied by the magnification of objective lens

68
Q

the magnification of the object lens can be?

A

4, 10, 40, 100x

69
Q

is used in linear measurement of microscopic specimen

A

micrometer eyepeice

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