Tools Techniques - Questions & Answers | Exam2Win

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81. Arrangement of atoms and molecular groups in DNA and RNA can be studied through

A. Spectrophotometer

B. X-ray diffraction

C. Histochemistry

D. Centrifugation

Explanation:

82. Types of lenses in a compound microscope are

A. 3

B. 4

C. 2

D. 1

Explanation:

83. Radioisotope employed for studying synthesis of protein is

A. ¹⁵N

B. ³⁵S

C. Both A and B

D. ³²P

Explanation:

84. Light source in electron microscope is

A. Infra-red light

B. Ultraviolet radiations

C. Beam of electrons

D. Cooled day light

Explanation:

85. Cell theory was first modified by

A. Schleiden

B. Brown

C. Schwann

D. Grew

Explanation: