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241. Which one combination of eye piece and objective would have widest field
A. 5X, 5X
B. 5X, 10 X
C. 10 X, 45 X
D. 10 X, 100 X
Explanation:
242. Details of mitochondrial structure could be studied only after the discovery of
A. Oil immersion lens
B. Fluorescent microscope
C. Electron microscope
D. All the above
Explanation:
243. Fluorescent microscope employs
A. UV rays
B. Polarised light
C. Beam of electrons
D. Both A and B
Explanation:
244. Schiff’s reagent is specific for
A. Cytoplasm
B. DNA
C. Pectin
D. Suberin
Explanation:
245. A scientist wants to study the structure of a protein. What technique would be useful
A. Electrophoresis
B. X-ray crystallography
C. Density gradient centrifugation
D. Microspectrophotometry
Explanation:
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