AAB Basic Knowledge Solved Papers -
Questions with Complete Solutions
4 types of centrifuges - Correct Answers ✅-tabletop
-microcentrifuges
-high-speed centrifuges
-ultracentrifuges
3 types of pipettes - Correct Answers ✅1. automated
2. semi-automated
3. glass
Automated pipettes - Correct Answers ✅frequently used to
prepare many samples for analysis and can be an integral
part of automated analyzer
Semi-automated micropipettes - Correct Answers ✅contain
or deliver small volumes of liquid ranging from 1 to 1000ul
2 types of displacement for semi-automated pipettes -
Correct Answers ✅air displacement: forward & reverse
positive displacement
Types of glass pipettes - Correct Answers
✅-transfer/volumetric
-measuring/graduated
-to contain (TC) or rinse-out pipettes
,AAB Basic Knowledge Solved Papers -
Questions with Complete Solutions
-to deliver (TD) pipettes
-to deliver/blow-out
Transfer/volumetric pipettes - Correct Answers ✅have a
bulb in the middle of the pipette with a tapered delivery tip
Measuring/Graduated pipette - Correct Answers ✅uniform
in diameter with a tapered delivery tip
To Contain (TC) or Rinse-out pipettes - Correct Answers
✅must be rinsed with the appropriate solvent after the initial
liquid has been drained from these pipettes
To Deliver (TD) pipettes - Correct Answers ✅filled &
allowed to drain by gravity
-must be vertically and the tip placed against the side of the
receiving vessel
To Deliver/Blow Out pipette - Correct Answers ✅are filled
and allowed to drain, after which the remaining fluid in the tip
is blown out.
-easily identified by the 2 frosted bands near mouthpiece of
the pipette
, AAB Basic Knowledge Solved Papers -
Questions with Complete Solutions
Temperature of Heat Blocks/Water baths - Correct Answers
✅36C-38C
Room Temperature - Correct Answers ✅20C-24C
Temperature of Refrigerators - Correct Answers
✅Laboratory 2C-8C
Blood Banking 1C-6C
Temperature of Freezers - Correct Answers ✅Laboratory
<18C
Blood Bank <65C
Bright-field microscopy - Correct Answers ✅-simplest of all
the light microscopy
-sample illumination is via transmitted white light illuminated
from below and observed from above
-most commonly used microscope
Dark-field microscopy - Correct Answers ✅-technique for
improving the contrast of unstained, transparent specimen
-uses a carefully aligned light source to minimize the quantity
of directly transmitted light entering the image plane,
collecting only the light scattered by sample
Questions with Complete Solutions
4 types of centrifuges - Correct Answers ✅-tabletop
-microcentrifuges
-high-speed centrifuges
-ultracentrifuges
3 types of pipettes - Correct Answers ✅1. automated
2. semi-automated
3. glass
Automated pipettes - Correct Answers ✅frequently used to
prepare many samples for analysis and can be an integral
part of automated analyzer
Semi-automated micropipettes - Correct Answers ✅contain
or deliver small volumes of liquid ranging from 1 to 1000ul
2 types of displacement for semi-automated pipettes -
Correct Answers ✅air displacement: forward & reverse
positive displacement
Types of glass pipettes - Correct Answers
✅-transfer/volumetric
-measuring/graduated
-to contain (TC) or rinse-out pipettes
,AAB Basic Knowledge Solved Papers -
Questions with Complete Solutions
-to deliver (TD) pipettes
-to deliver/blow-out
Transfer/volumetric pipettes - Correct Answers ✅have a
bulb in the middle of the pipette with a tapered delivery tip
Measuring/Graduated pipette - Correct Answers ✅uniform
in diameter with a tapered delivery tip
To Contain (TC) or Rinse-out pipettes - Correct Answers
✅must be rinsed with the appropriate solvent after the initial
liquid has been drained from these pipettes
To Deliver (TD) pipettes - Correct Answers ✅filled &
allowed to drain by gravity
-must be vertically and the tip placed against the side of the
receiving vessel
To Deliver/Blow Out pipette - Correct Answers ✅are filled
and allowed to drain, after which the remaining fluid in the tip
is blown out.
-easily identified by the 2 frosted bands near mouthpiece of
the pipette
, AAB Basic Knowledge Solved Papers -
Questions with Complete Solutions
Temperature of Heat Blocks/Water baths - Correct Answers
✅36C-38C
Room Temperature - Correct Answers ✅20C-24C
Temperature of Refrigerators - Correct Answers
✅Laboratory 2C-8C
Blood Banking 1C-6C
Temperature of Freezers - Correct Answers ✅Laboratory
<18C
Blood Bank <65C
Bright-field microscopy - Correct Answers ✅-simplest of all
the light microscopy
-sample illumination is via transmitted white light illuminated
from below and observed from above
-most commonly used microscope
Dark-field microscopy - Correct Answers ✅-technique for
improving the contrast of unstained, transparent specimen
-uses a carefully aligned light source to minimize the quantity
of directly transmitted light entering the image plane,
collecting only the light scattered by sample
