
BTC Downstrean 2
Authored by Haley-Jo Reis
Science
University
Used 6+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What rotor is best for withdrawing supernatant without disturbing the pellet?
Swinging bucket
Fixed angle
Vertical
None of the answers are correct.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In anion exchange chromatography,
the column contains both positive and negatively charged beads where proteins bind depending on their net charge
all of these
the column contains positively charged beads where negatively charged proteins bind
the column contains negatively charged beads where positively charged proteins bind
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is not a characteristic of preparative chromatography?
Larger amounts of sample material
Determine presence and relative proportion of analyte.
Usually, large column diameter
Isolate and purify analyte.
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which statement is correct?
Preparative centrifugation is used to study pure compounds.
Analytical centrifugation uses largre sample sizes
Analytical centrifugation is used to study pure compounds.
Preparative centrifugation uses small samples (<1ml)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
With regards to Ion Exchange chromatography: At a buffer pH below its pI,
a protein is positively charged and will bind to an anion exchanger.
a protein is negatively charged and will bind to an anion exchanger.
a protein is positively charged and will bind to a cation exchanger.
a protein is negatively charged and will bind to a cation exchanger.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thin layer chromatography is
electrical mobility of ionic species
adsorption chromatography
all of these
partition chromatography
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of chromatography uses a liquid stationary phase?
Partition
Adsorption
Affinity
Ion-exchange
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