Laboratory Flashcards
Polystyrene plastic wares can be autoclaved because it is rigid and can withstand the high temperature and pressure.
True or False
False
True or False: Polystyrenes are not resistant to C2H5OH.
True
True or False: Polystyrenes are resistant to CH4.
False
True or False: Plastic wares are preferred when testing Pb.
True
True or False: All glasswares are preferred for procedures that require heating.
False
Which of the following statements are correct?
i. Class A glasswares have twice the tolerance limits of Class B.
ii. Class B glasswares are often found in student laboratories.
iii. Class B glasswares are preferred for clinical laboratory applications.
iv. Class A glasswares are often found in student laboratories.
v. Both Class A or Class B glasswares appear identical
Only statements ii & v are correct.
True or False: Polyethylene is not suitable when processing picric acid because it tends to release more acid and may affect the chemical reaction.
False
True or False: Polycarbonate is not chemically-resistant but can be autoclaved.
True
True or False: Almost chemically-inert, Teflon is chemical resistant and is suitable for work temperature of -270oC to 255oC.
True
Aluminosilicate
Corex
Low Actinic
Amber-colored
Borosilicate
Kimax
Flint Glass
Soda Lime
Acid & Alkali Resistant
Vycor
Used for titration
Buret
Semi-accurate
Graduated Cylinder
Used to transfer measured volumes of liquid
Pipet
Used for preparation of standard solution
Volumetric Flask
Transfer/Volumetric Pipets
Ostwald-Folin
Transfer/Volumetric Pipets
Pasteur
Transfer/Volumetric Pipets
Volumetric
Measuring/Graduated Pipets
Micropipet
Measuring/Graduated Pipets
Mohr
Measuring/Graduated Pipets
Serologic
Statement 1: Anode is positively charged.
Statement 2: Anions is also positively charged
The first statements is TRUE but the second statement is FALSE
This component of Electrophoresis carries applied current in an electrophoretic process.
Buffer
Which of the following statements about Agarose Gel is FALSE?
1-It does not bind protein
2-It is extracted from seaweed
3-It requires small amounts of sample
4-It separates serum proteins into 20 or more fractions
4 only
In Electrophoresis, what will happen to a particle without a net charge?
Does not migrate
Statement 1: Electrophoresis is mainly used for the separation of macromolecule carbohydrates and their isoenzymes
Statement 2: The separation process is based on the migration of charged particles through a medium under the influence of an electric field.
The first statement is FALSE but the second statement is TRUE
Statement 1: Tris- borate EDTA and Tris-acetate EDTA are used for Nucleic acid separation
Statement 2: These buffers offer high resolution and high buffering capacity.
The first statements is TRUE but the second statement is FALSE
In Agarose Gel Electrophoresis, Bromphenol Blue is a stain used to visualize______.
Protein
Where does the sample well located in an Electrophoresis setup?
Gel slab
Statement 1: Densitometer measures the absorbance of stain- concentration of the dye.
Statement 2: Stained zones can be quantified in a densitometer
Both statements are TRUE
Statement 1: In Electrochemistry, oxidation-reduction reaction happens
Statement 2: The Reduction reaction takes place in cathode.
Both statements are TRUE
Which of the following statement about Galvanic cell is FALSE?
1-It involves a chemical reaction to produce electrical energy
2-It converts chemical energy into electrical energy
3-It is a spontaneous electrochemical reaction
4-It utilizes electrical energy to facilitate a chemical reaction
4 only
Which of the following statement about Potentiometry is FALSE?
1-It measures an analyte concentration
2-It requires two electrodes
3- It uses a Reference electrode as the measuring electrode
4-It uses an Indicator electrode that has a stable and well-known electrode potential.
3 and 4
A pH meter is an example of?
An ion-selective electrode
Which of the following Electrochemical techniques measures the current flow produced by an oxidation-reduction reaction at a single applied potential?
Amperometry
Electrical impedance measure the change in_________.
Resistance
This analyzer can perform in batches but can only perform one test.
batch analyzer
During your duty in a tertiary laboratory, samples have been sent in the laboratory. Upon checking the samples, you discovered that the samples have been hemolyzed. What automated delivery has mostly caused damage to the specimen due to acceleration and deceleration force?
pneumatic tube
Determine if the following statements are TRUE or FALSE.
Statement 1: Pneumatic tubes are associated with acceleration and deceleration force that causes hemolysis of samples.
Statement 2: Mobile robots can carry multiple samples and are cost-effective.
Both statements are TRUE
As a junior medical technologist working in a government hospital, your chief med tech is planning for total laboratory automation. He has tasked you and your co-workers to discuss the things that should the laboratory consider. Choose three things you should be considering for total laboratory automation.
a. increase productivity and quality of tests
b. turnaround time is very high
c. there are no staff shortages
d. disregarding the laboratory workspace
e. skills of the medical technologist deteriorate
a. increase productivity and quality of tests
b. turnaround time is very high
e. skills of the medical technologist deteriorate
Which of the following statements is/are correct regarding continuous flow analyer?
Statement A: An oil heating bath is used to promote color development.
Statement B: It has the capability of running multiple tests one sample at a time or multiple samples one test at a time.
Statement 1 is true while statement 2 is false.
Which part in preanalytic and postanalytic processing greatly reduces human errors?
a. mixing and incubation
b. automated specimen processing
c. automated specimen delivery
d. postanalytic processing
automated specimen processing
Which part in preanalytic and postanalytic processing includes refrigerating samples for storage and automatic disposal of samples?
a. preanalytic processing
b. automated specimen delivery
c. real-time monitoring
d. postanalytic processing
d. postanalytic processing
Which of the following statement is not true regarding total laboratory automation?
a. multiple analyzers are coupled to a specimen management and transportation system
b. can perform a limited variety of modules
c. an also can perform preanalytic and postanalytic units
d. a process control software coordinates the activities of the various automation modules
b. can perform a limited variety of modules
Which of the following statements describes Open Reagent System?
a. none of the choices
b. cannot use multiple reagents
c. can accommodate reagents from a third party
d. reagents cost more
c. can accommodate reagents from a third party
In the core components of chemistry analyzer, which core includes processing of data and data control?
a. sampling
b. mixing and incubation
c. data processing
d. real-time monitoring
c. data processing
In the core components of chemistry analyzer, which clearly describes real-time monitoring?
a. controls electromechanical processes
b. can use absorption or reflectance spectroscopy
c. continuously analyze instrument subsystems
d. allows the operator to modify the test parameters
c. continuously analyze instrument subsystems
In the core components of chemistry analyzer, which core can use absorption or reflectance spectroscopy?
a. detection
b. data processing
c. sampling
d. mixing and incubation
a. detection
Which of the following statements describes Closed Reagent System?
a. none of the choices
b. allows the operator to modify the test parameters
c. use only the manufacturer’s reagent
d. greater flexibility
c. use only the manufacturer’s reagent
True or False
10x rule indicates a systematic error.
True
Which of the following statements is/are TRUE regarding Westgard multirule system? Multiple answers can be selected. Choose three from the following.
a. use when at least 2 levels of control are run with the examination run
b. a combination of decision criteria or rules to assess if a system is in-control
c. multirule QC rules to help analyze whether or not an analytical run is in-control or out-of-control
d. you can apply Westgard multirule system eventhough you only have one control
a. use when at least 2 levels of control are run with the examination run
b. a combination of decision criteria or rules to assess if a system is in-control
c. multirule QC rules to help analyze whether or not an analytical run is in-control or out-of-control
Which of the following statements is not true about a TREND in a quality control?
a. caused by deterioration of the instrument light source
b. indicates a gradual loss of reliability in the test system
c. caused by gradual deterioration of control materials
d. is defined as abrupt changes in the control values
d. is defined as abrupt changes in the control values
If QC is out of control, which of the following should you do as a medical technologist? Choose two from the following.
a. repeat testing on patient samples and controls after correction
b. report patient results
c. run the samples of patients
d. identify and correct problem
a. repeat testing on patient samples and controls after correction
d. identify and correct problem
Which of the factors does not cause a SHIFT in quality control?
a. Gradual accumulation of debris on electrode surfaces
b. Change of reagent lot
c. Inaccurate calibration/recalibration
d. Sudden failure or change in the light source
a. Gradual accumulation of debris on electrode surfaces
Which of the following statements is/are the causes of systematic error? Choose two statements.
a. Change in test operator
b. Incorrect handling of control product
c. Inadequately mixed reagents
d. Inappropriate Storage of control
a. Change in test operator
b. Incorrect handling of control product