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181. Adenine is
A. Purine
B. Pyrimidine
C. Nucleoside
D. Nucleotide
Explanation:
182. Cold blooded animals are
A. Homeotherms
B. Eurytherms
C. Poikilotherms
D. Endotherms
Explanation:
183. Which is correct about energy changes in living cells?
A. First energy transfer, then energy transformation
B. First energy transformation, then energy transfer
C. Both occur discontinuously
D. Both occur continuously
Explanation:
184. Highest level of biological and ecological organization is
A. Biome
B. Ecosystem
C. Landscape
D. Biosphere
Explanation:
185. Living steady state has a self regulatory mechanism called
A. Homeothermy
B. Feedback mechanism
C. Homozygosity
D. Homeostasis
Explanation:
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