Exercise: Cell Cultivations

Questions for: Cell Cultivations

The size of a single plant cell is usually within the range of
A:
10-20Ξm in diameter and 25-100Ξm long
B:
20-40Ξm in diameter and 100-200Ξm long
C:
40-60Ξm in diameter and 200-300Ξm long
D:
60-80Ξm in diameter and 300-400Ξm long
Answer: B
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The protoplast can be used to
A:
modify genetic information
B:
create plant hybrid
C:
study plant viral infections
D:
all of these
Answer: D
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Callus cultures are amorphous cell aggregates arising from the unorganized growth of explants on an
A:
liquid medium
B:
solid nutrient medium
C:
aseptic solid nutrient medium
D:
solid or liquid medium
Answer: C
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Which of the following is not an indirect method for the measurement of cell mass?
A:
Nutrient composition
B:
Cell dry weight
C:
Viscosity
D:
Heat evolution
Answer: B
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The cell mass can be measured optically by determining the amount of light scattered by a suspension of cells. The measurements are usually at a wavelength of
A:
300-400nm
B:
400-500nm
C:
500-600nm
D:
600-700nm
Answer: D
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