The term protoplasm for the cell contents was coined by
Options
(a) Yon Mohl (b) J.E. Purkinje (c) J.S. Huxley&Hertwig (d) M. Schultz
Correct Answer:
J.E. Purkinje
Explanation:
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The prokaryotic cell does not contain
Options
(a) chromosome (b) mitochondrion (c) plasma membrane (d) ribosome
Correct Answer:
mitochondrion
Explanation:
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The organelle associated with aerobic respiration is
Options
(a) chloroplast (b) centriole (c) nucleus (d) mitochondria
Correct Answer:
mitochondria
Explanation:
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The cell as a basic unit of structure of living things was discovered by
Options
(a) Aristotle (b) Robert Hooke (c) Schleidan and Schwann (d) Gregor Mendel
Correct Answer:
Schleidan and Schwann
Explanation: […]
The branch of biology dealing with structure, function and reproduction of cell is
Options
(a) cytology (b) anatomy (c) histology (d) cell biology
Correct Answer:
cell biology
Explanation:
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The compound which contains all the four 1°,2°,3° and 4° carbon atoms is
Options
(a) 2,3-dimethylpentane (b) 3-chloro-2,3-dimethylpentane (c) 2,3,4-trimethylpentane (d) 3,3-dimethylpentane
Correct Answer:
3-chloro-2,3-dimethylpentane
Explanation:
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Calcium carbide on reaction with water yields
Options
(a) methane (b) ethane (c) ethene (d) ethyne
Correct Answer:
ethyne
Explanation:
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The boiling point of water decreases at higher altitudes because
Options
(a) the atmospheric pressure is low (b) the temperature is low (c) the atmospheric pressure is high (d) the temperature is high
The oxidation number of xenon in XeOF₂ is
Options
(a) zero (b) 2 (c) 4 (d) 3
Correct Answer:
4
Explanation:
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The conversion of ammonia into nitrites and nitrates is called
Options
(a) ammonification (b) nitrification (c) denitrification (d) all of these
Correct Answer:
nitrification
Explanation:
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