Biology Questions Practice Question and Answer
8 Q: Refrigeration is the process, due to which
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60ba061241fbe0438167bcb6- 1Bacterias are killedfalse
- 2Decreases the growth of bacteriafalse
- 3Efficiency of bacterial is restrainedtrue
- 4Bacteria are converted into plasmafalse
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Answer : 3. "Efficiency of bacterial is restrained"
Q: Harm is caused by ultraviolet radiation coming from the Sun-
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5f8feb2d3ca2d767b182ab0a- 1Lung cancerfalse
- 2Oral cancerfalse
- 3Skin cancertrue
- 4liver cancerfalse
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Answer : 3. "Skin cancer"
Q: What causes the dough to rise on the addition of yeast?
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61110bc7a7cc2a2d996fb7e8- 1increase in the number of yeast cellsfalse
- 2release of carbon dioxide gastrue
- 3rise in temperaturefalse
- 4increase in the quantity of matterfalse
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Answer : 2. "release of carbon dioxide gas"
Q: "The potential difference between the ends of a conductor is proportional to the current flowing in it." This is the rule?
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61110d6cf65c04691be9d16c- 1Coulomb's lawfalse
- 2Faraday's lawfalse
- 3Joule's lawfalse
- 4Ohm's lawtrue
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Answer : 4. "Ohm's law"
Q: The pH of human blood is
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5f8fe8293ca2d767b1829dd9- 17.5false
- 27.4true
- 38.1false
- 48.4false
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Answer : 2. "7.4"
Q: DNA is stored majorly in ___ of the cell.
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632c5d7731300b7ce473b85f- 1golgi bodyfalse
- 2cytoplasmfalse
- 3plasma membranefalse
- 4nucleustrue
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Answer : 4. "nucleus"
Q: How do most insects respire?
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6111093cd3ab8c0743d13cd6- 1skinfalse
- 2from cleomefalse
- 3from the lungsfalse
- 4from the nervous systemtrue
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Answer : 4. "from the nervous system"
Q: Anemia disease is caused due to deficiency of which vitamin?
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624ec0aa67b2505d7e5b0d95- 1Vitamin B12true
- 2Vitamin B1false
- 3Vitamin B3false
- 4Vitamin Cfalse
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Answer : 1. "Vitamin B12"
Explanation :
Symptoms of vitamin B12 deficiency or folate deficiency anemia develop slowly and are similar to those of other types of anemia, such as fatigue, weakness, and pale skin. Vitamin B12 deficiency can also cause nerve damage, the main symptoms of which include tingling, loss of touch, and muscle weakness. Confusion can arise when Vitamin B12 becomes too low. Vitamin B12 deficiency anemia in the elderly can be mistaken for dementia. This happens because of similar symptoms.