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86. In biological systems flow of energy occurs through
A. Loss of electrons
B. Gain of electrons
C. Both A and B
D. Photons
Explanation:
87. Wherever stored energy is present, the potential exists for
A. Work
B. Entropy
C. Exchange of materials with environment
D. All the above
Explanation:
88. Percentage of dry weight constituted by proteins in a living organism is
A. 9%
B. 12%
C. 29%
D. 50%
Explanation:
89. All cells use energy
A. Radiant energy
B. Chemical energy
C. Thermal energy
D. Mechanical energy
Explanation:
90. Rice originated in
A. Indo-Gangetic plain
B. Narbada Valley
C. Coast along Bay of Bengal
D. Coast along Arabian sea
Explanation:
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