Question 30
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A mixture can be separated based on the physical properties of the constituent
substances. One method used to separate mixtures is centrifugation, and commonly
used to separate components of a blood sample. A machine called a centrifuge can
separate red blood cells and white blood cells from each other as well as from other
components such as platelets and plasma.
The mixture is placed in tubes and loaded into the centrifuge. When the centrifuge is
turned on, it rapidly spins the containers. Generating a force that pushes the denser
components to the bottom while the less dense components remain on top.
Based on the information above, which of the following factors does NOT affect the
effectiveness of centrifugation?
A. Centrifuge speed or rotational speed
B. Sample volume and concentration of a blood sample
C. Temperature of the centrifuge
D. Type of centrifuge tubes used
A mixture can be separated based on the physical properties of the constituent
substances. One method used to separate mixtures is centrifugation, and commonly
used to separate components of a blood sample. A machine called a centrifuge can
separate red blood cells and white blood cells from each other as well as from other
components such as platelets and plasma.
The mixture is placed in tubes and loaded into the centrifuge. When the centrifuge is
turned on, it rapidly spins the containers. Generating a force that pushes the denser
components to the bottom while the less dense components remain on top.
Based on the information above, which of the following factors does NOT affect the
effectiveness of centrifugation?
A. Centrifuge speed or rotational speed
B. Sample volume and concentration of a blood sample
C. Temperature of the centrifuge
D. Type of centrifuge tubes used