Review Exam 1

Question 1

A meter is the standard unit of

Answer 1

Length

Question 2

A liter is the standard unit of

Answer 2

Volume

Question 3

A gram is the standard unit of

Answer 3

Weight

Question 4

Osmometry is

Answer 4

The measurement of the osmolality of an aqueous solutions (serum, plasma or urine)

Question 5

Techniques of choice/ used most often

Answer 5

Freezing point depression

Question 6

Serological pipettes are

Answer 6

Used to measure and transfer diff amounts of liquid.

Question 7

Scrolling bulb can only be used with

Answer 7

Serological pipette

Question 8

To obtain the desired amount of liquid. To deliver the states volume

Answer 8

The liquid in the tip of the pipette is ‘blown out’, using a bulb. (Etched or colored rings on pipette)

Question 9

Molarity is defined

Answer 9

As the number of miles of solute per liter of solution

m / l (mol/L)

Question 10

Normality is

Answer 10

amount of solute to the total volume of solution

n / 1 L (Eq/L)

Question 11

Ways a spectrophotometer quality assurance can be used

Answer 11

Wavelength accuracy, stray light, linearity, bandwidth, photo metric accuracy

Question 12

A solute is

Answer 12

Dissolving in liquid

Question 13

Analytes

Answer 13

Biological substances

Question 14

Solvent is

Answer 14

Liquid in which solute is dissolved

Question 15

Solution is

Answer 15

Solute and solvent

Question 16

Colligative properties is

Answer 16

Osmotic pressure, vapor pressure, freezing point, boiling point

Question 17

Redox potential is

Answer 17

Measure of ability of solution to accept or donate electrons

Question 18

Conductivity is

Answer 18

Measure of how well electricity passed through a solution

Question 19

pH

Answer 19

Inverse log of hydrogen ion concentration

Question 20

Buffers

Answer 20

Weak acids or bases. Stabilizes pH

Question 21

Type water Used most for routine lab procedures

Answer 21

Type 2 water

Question 22

Standard ref materials certifies by Nist are used

Answer 22

Primary standards (grade c). Exact concentration known.

Question 23

For specimen sampling processing, in hemolysis you should notice

Answer 23

Pink to red. Rupture of rbc’s

Question 24

For specimen sampling processing, in icterus you should notice

Answer 24

(From bilirubin) color is florisent red. Orange to brown. caused by liver disease

Question 25

For specimen sampling processing, in lipemia you should notice

Answer 25

Fat in blood. Makes plasma look like milk

Question 26

TD is what kind of pipette

Answer 26

Drain out pipette

Question 27

For a high degree of accuracy use a

Answer 27

Volumetric pipette.

Question 28

Non volumetric glasswares

Answer 28

Beaker and flask

Question 29

Volumetric glasswares

Answer 29

Volumetric flask, graduated cylinder

Question 30

Two types of centrifuge

Answer 30

Swing or fixed

Question 31

Specific gravity

Answer 31

The density of a solution relative to water

Question 32

One of the Beers Laws

Answer 32

Absorption of visible light by compound is directly proportional to the concentration of the compound

Question 33

pH ranges

Answer 33

0-6.9 is acidic
7.0 Is neutral
7.1-14 is basic (alkaline)
0-14 is pH range

Question 34

Name monochromators

Answer 34

Filters, prism, grating, slits

Question 35

Formula for beers law

Answer 35

Ct= At/As • Cs

Question 36

C
t
A
s
Stands for in the Beers law

Answer 36

C- concentration
t - test (unknown)
A- absorbance
s- standard ( calibrator)