Chem 221 - Biochemistry for Science Majors » Fall 2021 » Working with Proteins
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Question #1
What type of sample does scientist in the video start with?
A.
Frozen heart
B.
Chicken breast
C.
Crude extract
D.
Cell pellet
Question #2
What is the FIRST method used in the video to create the crude extract?
A.
Homogenization
B.
Blender
C.
Sonication
Question #3
What is the second method used in the video to create the crude extract?
A.
Sonication
B.
Blender
C.
Homogenization
Question #4
How does the scientist prevent denaturation during protein extraction?
A.
Works really fast
B.
Boils the sample
C.
Keeps sample on ice
D.
Mixes the sample multiple times
Question #5
What is the speed used to centrifuge the balanced tubes?
A.
Medium speed
B.
Lowest speed
C.
Highest speed
Question #6
What is the brand of the centrifuge rotor?
A.
Biorad
B.
Smith
C.
Sorvall
Question #7
Centrifugation time is
A.
20 minutes
B.
40 minutes
C.
60 minutes
D.
90 minutes
Question #8
After centrifugation, supernatant is filtered.
A.
FALSE
B.
TRUE
Question #9
Look up the meaning of FPLC (we did not discussed it in class). The most common FPLC is
A.
Ion exchange
B.
Affinity chromatography
Question #10
To load sample in the SDS PAGE apparatus
A.
A micropipette is used
B.
A Mohr pipette is used
Question #11
The color of the sample loaded in the SDS PAGE wells is
A.
Green
B.
Blue
C.
Pink
Question #12
Observe the gel. Do the bands show proteins with about the same weight or different weights?
A.
Different
B.
Same
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