MT AAB Basic Knowledge Questions
with Correct Answers
Equation for speed of centrifuge - ANSWERSRCF = 1.118 x 10^-5 x r x (rpm)^2
How often should a centrifuge be calibrated? - ANSWERSEvery six months using an
NIST timer
How often should pipettes be calibrated? - ANSWERS4x per year for reproducibility and
accuracy
Temperature for lab refrigerators - ANSWERS2-8 deg. C
Temperature for lab freezers - ANSWERSless than 20 deg C
Room temperature - ANSWERS20-24 deg C
Celsius to Fahrenheit - ANSWERS(9/5)C + 32 = F (reverse for Celsius)
Serial dilution - ANSWERSDilution of a substance several times by the same amount
each time, adding from the previous solution
Molarity - ANSWERSM = moles/L, 1 mole = gram molecular weight
osmolality - ANSWERSthe concentration of a solution expressed as the total number of
solute particles per kilogram.
pH formula - ANSWERSpH=-log[H+]
=pKa + log(base/acid)
low-density lipoprotein (LDL) - ANSWERStransports cholesterol and triglycerides from
liver to peripheral tissues.
LDL cholesterol = total cholesterol - (HDL cholesterol + TRIG/5)
with Correct Answers
Equation for speed of centrifuge - ANSWERSRCF = 1.118 x 10^-5 x r x (rpm)^2
How often should a centrifuge be calibrated? - ANSWERSEvery six months using an
NIST timer
How often should pipettes be calibrated? - ANSWERS4x per year for reproducibility and
accuracy
Temperature for lab refrigerators - ANSWERS2-8 deg. C
Temperature for lab freezers - ANSWERSless than 20 deg C
Room temperature - ANSWERS20-24 deg C
Celsius to Fahrenheit - ANSWERS(9/5)C + 32 = F (reverse for Celsius)
Serial dilution - ANSWERSDilution of a substance several times by the same amount
each time, adding from the previous solution
Molarity - ANSWERSM = moles/L, 1 mole = gram molecular weight
osmolality - ANSWERSthe concentration of a solution expressed as the total number of
solute particles per kilogram.
pH formula - ANSWERSpH=-log[H+]
=pKa + log(base/acid)
low-density lipoprotein (LDL) - ANSWERStransports cholesterol and triglycerides from
liver to peripheral tissues.
LDL cholesterol = total cholesterol - (HDL cholesterol + TRIG/5)
