Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CHEM > CC QUIZ 1 > Flashcards

CC QUIZ 1 Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

safety features built into the overall design of a product

a. Work practice control
b. Engineering control
c. Emergency equipment
d. PPE

A

Engineering control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Convert 1 uL to dL?

a. 1 X 10-5
b. 1 X 10-6
c. 1 X 10-4
d. 1 X 10-3

A

1 X 10-5

NOTE:
deci – 10-1 or 0.1
micro – 10-6 or 0.000 001
bawasan mo lang ang 10-6 ng isa which is 10-5 or 0.000 01

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The absorbance of a solution does not increase as its concentration increase

a. Need to repair the monochromator
b. There is a loss of linearity due to stray light
c. Transmittance will increase
d. AOTA

A

There is a loss of linearity due to stray light

NOTE:
Stray light limits the maximum absorbance that a spectrophotometer can achieve
Stray light is the MOST COMMON cause of LOSS OF LINEARITY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Contains the same reagents used for the test; adjust the spectrophotometer to 100% (or 0 absorbace); the instrument automatically subtract the color contributed by the reagent from each reading. Thus correcting color contribution of the reagents

a. Sample blank
b. Reagent blank
c. Blanking technique
AOTA

A

Reagent blank

NOTE:
A - is used to subtract the intrinsic absorbance of the sample usually caused by hemolysis, icterus, turbidity, or drug interference.
C - serum w/reagent. For correcting absorbance caused by reagent’s color

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The ff. measure trace metals except

a. Spectrophotometer
b. AAS
c. FEP
d. Turbidimetry

A

Turbidimetry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Oxidation reactions of luminol, acridinium esters, and dioxetanes which create rapid increase in intensity of emitted light followed by a gradual decay?

a. Fluorometry
b. Chemiluminiscence
c. Spectrophotometer
d. Nephelometry

A

Chemiluminiscence

NOTE:
Emission of light is created from a chemical or electrochemical reaction. No excitation radiation, no monochromator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

True about electrophoresis

a. Proteins will stop migrating when it reached the isoelectric point
b. The pH of the buffer used in standard electrophoresis is pH 6.5
c. Plasma is used more often than serum
d. Standard electrophoresis separates protein into 12 zones

A

Proteins will stop migrating when it reached the isoelectric point

NOTE:
A - Isoelectric point (pI) – pH where protein has no net charge
B - pH 8.6
C – serum is used
D- 5 zones (Albumin, a1 globulin, a2 globulin, beta globulin, and gamma)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The gold standard for drug testing?

a. It uses pressure for fast separation of substances
b. It separates according to charge and not size
c. The sample is volatilized, then separates the various components of the sample based on size and/or polarity. The separated components then go into a mass selective detector
d. It measures light scatter by a particle in a solution

A

The sample is volatilized, then separates the various components of the sample based on size and/or polarity. The separated components then go into a mass selective detector

NOTE:
A – HPLC for Hemoglobin
B – isoelectric focusing electrophoresis
C- GCMS
D – nephelometry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

As the concentration of the osmole increases

a. The freezing point lowers
b. The vapor pressures decreases
c. The boiling point and osmotic pressure are raised
d. AOTA

A

AOTA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What method is being described: When oxygen (oxidant) diffuses to the membrane, it will accept electron from a reducing agent (electron donor), thus the flow of electron corresponding the O2 concentration is being measured

a. Potentiometry
b. Coulometry
c. Amperometry
d. Polarography

A

Amperometry

NOTE:
A - potential difference between an indicator electrode and a reference electrode is measured
B - number of equivalent weights of a reactant oxidized or reduced is directly proportional to the quantity of electricity used in the reaction
D- the measurement of differences in current at a constant voltage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

True about control except

a. Sample that is chemically & physically similar to unknown specimen
b. Monitors precision of test system
c. is tested in exactly the same with the patient specimen
d. Reference material with known concentration of analyte

A

Reference material with known concentration of analyte

NOTE:
D – standard/calibrator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Using resin to selectively removed ions, its product is ideal for electrolyte study?

a. Deionization
b. Distillation
c. Reverse osmosis
d. Ozone treatment

A

Deionization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How to derive the equivalence from grams?

a. Sum the atomic mass of each element of a compound
b. Divide the gram molecular weight by its (the compound) valence
c. Divide the mole by liter
d. NOTA

A

Divide the gram molecular weight by its (the compound) valence

NOTE:
A – mole
C – Molarity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Most popular and versatile analyzer –measures only the tests requested on a sample

a. Discrete
b. Centrifugal
c. Continuous flow
d. Vitros

A

Discrete

NOTE:
A - It is capable of running multiple –tests-one-sample-at-a-time
B - Major advantage: batch analysis
C - Samples flow through a common reaction vessel or pathway

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

All but one is incorrect?

a. Re-spinning of tubes after transferring the serum of plasma to another tube
b. Speed testing of centrifuge every quarter
c. Weekly disinfection of the centrifuge
d. NOTA

A

NOTA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

To confirm a that a pipet needs “blow out”, one must look for

a. Two thin rings near the mouthpiece of the pipet
b. No colored rings near the mouthpiece of the pipet
c. Curve glass near the tip of the pipet
d. Curve glass near the mouthpiece of the pipet

A

Two thin rings near the mouthpiece of the pipet

17
Q

Commonly used in verification of pipette calibration?

a. Tachometer
b. Water
c. Viscous fluid
d. Air

A

Water

NOTE:
Gravimetric pipette calibration - specific amount of water is pipetted into a weighed container
Volumetric pipette calibration - uses a dye of known concentration and water

18
Q

Fume hood is a necessity for every clinical chemistry lab . It is the only safe place to

a. prepare reagents that produce fumes
b. Open any container of a material that gives off harmul vapors
c. heat flammable solvents
d. AOTA

A

AOTA

19
Q

Variation according to sleeping and waking times

a. Cyclic
b. Circadian
c. Diurnal
d. Circannual

A

Diurnal

NOTE:
A- Changes in analyte concentration occur at different times during the day, week, or month
B - Occurs during a 24-hour period
D- Occurs twice a year; related to seasonal changes in climate and diet

20
Q

The major concern in specimen collection

a. Chain of custody
b. Patient identification
c. Sample identification
d. Diurnal variation

A

Patient identification

NOTE:
ABC – are all major concerns in specimen collection, but the order is Patient ID, Sample ID, and COC

21
Q

Analyte that increases in strenuous exercise that can be life threatening

a. Protein
b. AST
c. Potassium
d. Cholesterol

A

Potassium

NOTE:
C- hyperkalemia can cause cardiac arrest
ABC – are all increasing
D – decreases

22
Q

Why does lactate increase during exercise?

a. Low oxygen during exercise diverts metabolic pathway to anaerobic metabolism
b. Low glucose triggers increase in cortisol
c. Gluconeogenesis converts TAG and Protein to Glucose-6-phosphate
d. AOTA

A

Low oxygen during exercise diverts metabolic pathway to anaerobic metabolism

NOTE:
A – LD will convert pyruvate to lactate in anaerobic metabolism
B - Cortisol will stimulate GLUCONEOGENESIS

23
Q

A specimen for glucose is diluted 1:5. The value of the diluted specimen is 100 mg/dL. What should be done to correct the dilution?

a. Multiply the diluted specimen value to the reciprocal of dilution
b. Divide the diluted specimen value to the reciprocal of dilution
c. Distance leading edge of component moves divide by total distance of solvent
d. Divide 500mg/dL by 5

A

Multiply the diluted specimen value to the reciprocal of dilution

NOTE:
100 mg/dL (diluted specimen value) x 5 (reciprocal of dilution) = 500 mg/dL

24
Q

Electrolytes, glucose, BUN, creatinine, and osmolality examinations been performed on a patient suspected of ingesting ethanol. What can be done to help reveal this condition without additional tests?

a. Compute the anion gap
b. Compute the osmolality
c. Measure the osmolality
d. Compute the difference between the measured osmolality and the calculated osmolality

A

Compute the difference between the measured osmolality and the calculated osmolality

NOTE:
d - *compute for the osmolal gap

25
Q

The predominant designation for temperature that is adopted by the SI?

a. Candela
b. Kelvin
c. Celsius
d. Fahrenheit

A

Kelvin

NOTE:
B- The SI designation for temperature is the Kelvin scale
C - The predominant practice for temperature measurement uses the Celsius

26
Q

Certifies laboratories to conduct forensic drug testing?

a. IUPAC
b. ISO
c. SAMHSA
d. CLSI

A

SAMHSA

NOTE:
C - Substance Abuse and Mental Health Services Administration

A - International Union of Pure and Applied Chemistry
B - International Organization for Standards
D - Clinical and Laboratory Standards Institute

27
Q

Hearing protection (earplugs or earmuffs)

a. Work practice control
b. Engineering control
c. Emergency equipment
d. PPE

A

Emergency equipment

28
Q

Pico is

a. 10-15
b. 10-9
c. 10-12
d. 10-18

A

10-12

NOTE:
A – Femto
B – nano
D – atto

29
Q

The conversion factor of glucose?

a. 88.4
b. 0.026
c. 0.0113
d. NOTA

A

NOTA

NOTE:
Glucose is 0.0555

30
Q

Measurement of assay at two different wavelength

a. Bichromatic analysis
b. Double beam in space
c. Double beam in time
d. Monochromator

A

Bichromatic analysis

NOTE:
B- use two photodetectors
C - uses one photodetector
D- isolates specific wavelength

CHEM (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions