Q1 The main purpose of staining is to increase between different parts of the specimen by giving them different colours and colour density

Q2 When working with temporary slides, there is the danger of contaminating your microscope's lenses

Q3 Fixation is necessary if the material is already preserved

Q4 When cover-glass is not used for temporary slide presentation, the curvature of the drop of liquid in which the object is mounted causes distortion

Q5 As good practice in the storage of prepared slides, slide may be stored flat in a card tray or upright in a slotted box or cabinet drawer once the mountant is

Q6 Slide labels should essentially carry the following information: name of the organism, part of the organism used and the type of

Q7 The strength of the current between two electrodes in a depends on the electric potential between the electrodes and the concentration of ions in the solution

Q8 For sectioning soft animals like celloidin embedded tissues, the most appropriate knife is microtome

Q9 photometry is based on the eye's response

Q10 Luminous emittance is used for light emitted from a

Q11 Luminous efficacy is the ratio of luminous flux to flux

Q12 "Bright" can refer to a light source, which concentrates the luminous flux it has into

Q13 sectioning a specimen in the laboratory is done in order to get a section of tissue for microscopic viewing?

Q14 A dissecting microscope is also referred to as microscope

Q15 Condenser lenses are best used at higher powers of to focus light unto a specimen in order to give a sharp image

Q16 Microscopes can be grouped into simple and microscope

Q17 Slides may be prepared as temporary and

Q18 When focusing the microscope to view a specimen, always start and end focusing with power objective lens

Q19 The simplest light microscope is

Q20 A is the amount of light given into one steradian by a point source of one candela strength

Q21 The diaphragm knob on the microscope controls the directly above the condenser lens and may be used to vary the amount of light reaching the slide from below

Q22 The shortest lense on a nosepiece has the power

Q23 On a "nosepiece", there are objective lenses

Q24 To observe stained smears of mixed bacteria, use microscopy is employed

Q25 Bright field microscopy is best for viewing specimens in sample

Q26 Dark field microscopy is best for viewing specimens

Q27 A compound microscope magnifies an object and shows it in a direction

Q28 In hand cut sectioning, the specimen is separated from the support after sectioning by in water or alcohol

Q29 To make a video of mobile specimen under the microscope, use microscope

Q30 A microscope is a laboratory tool used to small objects that are difficult to see by the naked eye

Q31 In order to reduce evaporative losses from the edges of the cover-glass, a ring of __is place round the edges of cover-glass of a slide

Q32 In all cases of slide preparation, the section to view is mounted on prior to its examination

Q33 When your microscope is not in use always cover it with a

Q34 "Clearing" removes all traces of and allows the mountant to infiltrate the tissue

Q35 Fixation is not necessary if the material is already

Q36 When dissecting, pick the skin of a big animal up with a pair of

Q37 In the making of a permanent stained preparation, complete dehydration ensures complete of tissues with preservation and prevents bacterial decay of specimen

Q38 Heat is a form of

Q39 During dissection, invertebrates are better opened up from side

Q40 If a slide is to be kept for long-term reference, it must be made as a preparation

Q41 A is the luminous intensity of a source of monochromatic radiation, of frequency 540 tetrahertz and a radiant intensity of 1/683 watts per steradian

Q42 One of the ways of communicating scientific findings is through

Q43 The strength of the current between two electrodes in a depends on the electric potential between the electrodes and the concentration of ions in the solution

Q44 Conductometry measures the strength of the between two electrodes in a solution containing ions

Q45 Conductometry is used to measure the concentration in a solution

Q46 The unit of measurement of radiant flux is

Q47 The eyes respond much more strongly to light than to

Q48 is the ratio of luminous flux to radiant flux

Q49 The is a function that weighs radiant power at a wavelength

Q50 The science of the measurement of light in terms of its perceived brightness to human eye is referred to as

Q51 A rotary microtome is best for cutting sections of microns

Q52 The unit of measurement of luminous flux is

Q53 The sledge microtome could weigh a sample as much as

Q54 A is the luminous intensity of a source of monochromatic radiation, of frequency 540 tetrahertz and a radiant intensity of 1/683 watts per steradian

Q55 In hand cut sectioning, the specimen is separated from the support after sectioning by in water or alcohol

Q56 Biologists and nutritionists measure heat energy in

Q57 A lumen is the amount of light given into one steradian by a point source of one strength

Q58 Photometric measurements may not accurately indicate the perceived brightness of sources of dim lighting conditions because photometry is based on the eye's response

Q59 Microtomes are employed in sectioning where to be sectioned are delicate and not firm enough to be held by the hand

Q60 microtome knife is used for sectioning soft animals like celloidin embedded tissues

Q61 The capacity of a material to store heat depends on the following except
the shape of the material
arrangement of the atpms or molecules
its mass
the bonding forces that hold the atoms or molecules together

Q62 Which of the following is not a component of high performance liquid chromatography?
injector system
the column
the solvent consumer
the detector

Q63 In scientific studies, what is the most potent method for the verification of the correctness of a report?
Repetition of the study
Experimentation
Collation of the results
Statistical analysis of the results

Q64 Heat is a form of
power
temperature
energy
fire

Q65 A conductometer is
an instrument for measuring complex resistances using alternating voltages
composed of two electrodes that face each other and are conducting
an instrument for measuring complex resistances using direct voltages
Uqasi-ohmic conductor

Q66 A good scientific paper should be
of high standard
original, focused, well written and contribute useful information to knowledge
acceptable and properly reported
voluminous

Q67 Latent heat of transition of solid to liquid is referred to as
specific latent heat of vaporization
specific latent heat of fusion
specific latent heat of transition
specific latent heat of sublimation

Q68 The amount of heat required to raise the temperature of a substance by 1oC is proportional to its
mass and the change in temperature
size and temperature
volume and temperature decrease
size and mass

Q69 The following are applications of chromatograpgy except
to identify pollutants in water samples
to analyse samples taken from athletes to check for the presence of drugs
to test water samples for the presence of pollutants
in forensic work for the separation of dyes from fibres

Q70 An important scientific methodology is
possession of a keen sense of observation
journalism
publication
repetition of scientific findings

Q71 The report of a scientific investigation should include
Introduction, results and conclusion
a brief summary, introduction, materials and methods, results and discussion of the results
Hypothesis, introduction, summary
Materials and methos, results and conclusion

Q72 Scientific findings can be communicated through the following except
patent
technical reports
scientific journals
transportation system

Q73 Specific latent heat is
((heat absorbed/heat released) x change in temperature) J/KgoC
(amount of heat absorbed or released by a body/change in temperature) J/oC
((heat released x change in temperature) J/KgoC
(amount of heat absorbed or released/mass of substance) J/Kg

Q74 Heat naturally flow from
cold to hot part of a body
warm to hot part of a body
hot to cold part of a body
warm to cold part of a body

Q75 Dissection of animals is done in ___
dissection scissors
dissection pin
dissection tray
dissection bowl

Q76 When dissection involves cutting through tissues, especially blood vessels,
take steps to ensure that blood flow or the contentss of the cut tissues or organ does not interfere with the studies
usually wash the animal with alcohol
wash and soak away blood with cotton wool or blotting paper
wash with ethyl ether and blot dry with cotton wool or blotting paper

Q77 You cut through a small animal with
a pair of scissors pointing upwards to avoid damage to underlying tissues or lower internal structures
a pair of forceps for ease of handling and manipulation of internal structures
a dissection pin to avoid damage to underlying tissues and lower internal structures
a dissection flag to ensure a clean slit and avoid damage to lower internal structures

Q78 When dissecting, pick the skin of a big animal up with
a pair of forceps
your left hand
a pair of scissors
a dissection pin

Q79 It is usually better to do dissection
before any theoretical studies so you would be able to give good attention to whay you are doing
after theoretical studies to enable you have an understanding of what you are on the look out for
through theoretical studies because it saves time and prepares you well for the future
without any theoretical knowledge so you could describe the object in your own words and appreciate the organs better

Q80 Study of the nervous system is done with
anaesthesized animals
life animals
preserved animals
formalin

Q81 Dissected animals can be disposed of
in a dustbin
by placing in a plastic bag and throwing the bag in the thrash can
by burrying it deep in the soil
cooking or roasting it

Q82 What is flag labelling?
To write the name of an organism to be dissected on a colourful flag
To write the name of a tissue or organ on a small piece of paper and attach it to that organ for identification purposes
To flag label an organ by writing the name of the organ on a small piece of paper through which a needle is passed on one end,this is then inserted in a dissecting tray close to the organ
To simply label a sample for dissection purposes

Q83 Chloroform and ether are given to animals before dissect. Why?
as preservatives
as anaesthesing agent
as normal routine procedure
to safeguard the instructor

Q84 How would you immobilize a frog for dissection?
By pithing
By corking
By injecting
By demobilizing

Q85 The following are required for dissection except
animal
formalin
dissection tray
dissection fork

Q86 Wastes from dissection should be
thrown on the table top
thrown on the labortory floor
packed in a petri dish
you do not need to bother with it

Q87 A set of four dissection equipments / tools have been arranged on the laboratory bench for an instructor / teacher. How many of these tool/equipment would have to be provided for the student?
1
2
3
4

Q88 The main activity in dissection is
to remove connective tissue, which binds the several parts together
cut the different parts into distinct sections
to separate the tendones from ligaments
all of the above

Q89 The following are good practices in the storage of prepared slides except
Slides which are prepared in-house do not need to be stored because you can always prepare it again and even in a better state
Slide may be stored flat in a card tray or upright in a slotted box or cabinet drawer once the mountant is hard
Freshly prepared permanent slides must be stored flat until the mountant has hardened
Special thermostatically controlled warming plate or an incubator may be used to dry up the slides

Q90 Slide labels should essentially carry the following information
name of the organism, type of preparation ans stains used
signature, part of the organism used and date
name of the organism, part of the organism used and type of preparation
Date, part of the organism used and stains used

Q91 The main purpose of staining is
to leave tissues in the stain until nuclei are deeply stained
to increase optical contrast between different parts of the specimen by giving them different colours and colour density
to counterstain
double stain

Q92 Clearing removes all traces of alcohol and
cloudiness in the slide
Canada balsam
Toluene
allows the mountant to infiltrate the tissue

Q93 In the making of a permanent stained preparation, complete dehydration ___
is a process of dehydration
ensures complete infiltration of tissues with preservation and prevents bacterial decay of specimen
is carried out rapidly to ensure that there is no distortion of delicate tissues
should be done speedily to ensure that the materials are properly stained

Q94 The following are preservatives except
Clove oil
Canada balsam
Euparal
DPX mountant

Q95 If a slide is to be kept for lon-term reference,
it must be made as a permanent preparation
it must not be made as a permanent preparation
it must be made quickly as a temporaty preparation
non of the above

Q96 Fixation is not necessary if
the specimen is not stained
the specimen is stained
the material is wet
the material is already preserved

Q97 For temporary slide preparation, which of the following options is most accurate?
When cover-glass is not used, the curvature of the drop of liquid in which the object is mounted causes optical distortion
there is the danger of contaminating your microscope's objectives lenses
options A and B
No immenent danger

Q98 The a ring of nail polish or gum is place round the edges of cover-glass of a slide to
reduce evaporative losses from the edges of the cover-glass
enhance evaporation from the edges of the cover-glass
enhance the clarity of the specimen under the microscope
reduce the dullness of the prepared slide and make it permanent

Q99 When material under examination is in a fixed state, it means that it is
a living specimen
a specimen that has been killed with 70% alcohol or Bouin fluid and formalin
a stained specimen in Bouin fluid
a vital stain

Q100 In all cases of slide preparation, the section to view is ___ prior to its examination
mounted in oil slide
mounted on glass slide
smeared in fluid
crushed in crucible

Q101 Slides may be prepared as
wet and dy
temporary and permanent
oil and stain
permanent and oil

Q102 When focusing the microscope to view a specimen, ___
always put away the microscope
always start and end focusing with high power objectives lens
always start and end focusing with low power objective lens
always start and end focusing with low and high power objectives lenses respectively

Q103 When your microscope is not in use what should you do?
Always let it stand on the table
Always cover it with lens tissue
Always plug it in the sucket and switch on the light
Always cover it with a dust jacket

Q104 The simplest light microscope is
simple magnifying lens
complex microscope
simple compound microscope
compound microscope

Q105 A compound microscope___
magnifies an object directly
magnifies an object indirectly
magnifies an object and shows it in a reverse direction
enlarges an object disproportionately

Q106 What does the diaphragm knob on the microscope do?
It sets the slide in good position for lens viewing
It supports the light apperture
It controls the disc directly above the condenser lens and may be used to vary the amount of light reaching the slide from above
It controls the disc directly above the condenser lens and may be used to vary the amount of light reaching the slide from below

Q107 Condenser lenses are best used at___ to focus light unto a specimen in order to give a sharp image
higher powers of 40X and 60X
higher powers of 60X and 100X
higher powers of 40X and 100X
higher powers of 60X and 100X

Q108 The shortest lense on a nosepiece has___ power
highest
strong
lowest
great

Q109 On a "nosepiece", there are___objective lenses
2 to 3
3
5
3 to 4

Q110 To observe stained smears of mixed bacteria, ______ microscopy is employed
oil emmersion microscopy
phase contrast microscopy
bright field microscopy
dark field microscopy

Q111 Dark field microscopy is best for viewing _______ specimens while bright field microscopy is best for viewing _______?
liquid sample, stained specimens
transparent, specimens at high magnification
slide, focal plane specimens
stained, specimens in liquid sample

Q112 To make a video of mobile specimen under the microscope, you use will use ___.
digital video microscope
digital imager microscope
digital light microscope
stereo microscope

Q113 ___ microscopes can take pictures of objects.
electron
scanning
light
digital

Q114 Two types of electron microscope are _____
transmitter microscope and microscopic electron scanner
fluorescence electron microscope and light microscopic electron
scanning electron microscope and transmission electron microscope
transmitter electron microscope and scanner electron microscope

Q115 ___ shows three-dimensional image of an object
Stereo microscope
Dissecter
Fluorescence microscope
compound microscope

Q116 A dissecting microscope combines _____
two objective lenses and two eyepieces to view an object
one objective lens and two eyepieces to view an object
one objective lens and one eyepice to view an object
two objective lense and one eye piece to view an object

Q117 A dissecting microscope is also referred to as ______
light microscope
dissecter
stereo microscope
objective microscope

Q118 A simple magnifying lense is useful for ______
laboratory work
field work
office work
road construction work

Q119 Two groups or kinds of microscopes are _____
simple and compound microscope
compound and complex microscope
simple and singular microscope
plano-simple and plano-complex microscope

Q120 A microscope is ____
a laboratory tool used by everybody
a laboratory tool used to magnify small objects that are difficult to see by the naked eye
a laboratory tool used by laboratory technologists
a laboratory tool used by laboratry workers to magnify objects at random