Biology Questions Practice Question and Answer
8 Q: Heart attack occurs due to :
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6389d246c878936066e81fc3- 1Bacterial attack on the heartfalse
- 2Stopping of heart beatfalse
- 3Lack of blood supply to the heart itselftrue
- 4Impairment of heart’s working due to unknown reasonsfalse
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Answer : 3. "Lack of blood supply to the heart itself"
Q: The total number of chromosomes in a human being is-
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5f8fd4c1f28f4b47be4b9d1f- 146true
- 248false
- 352false
- 4Indeterminatefalse
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Answer : 1. "46"
Q: The function of Hemoglobin in the human body is to-
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5f0eddcc1090a0586540bc35- 1Carry oxygen to various tissuestrue
- 2Help excretionfalse
- 3Provide enzymes and hormonesfalse
- 4Provide amino acids for growthfalse
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Answer : 1. "Carry oxygen to various tissues "
Q: Which of the following blood group is a universal donor?
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5f7564e1e487e60dcecaaf2c- 1AB positivefalse
- 2AB negativefalse
- 3O positivefalse
- 4O negativetrue
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Answer : 4. "O negative"
Q: In which part of the body is the disorder related to diabetes?
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5f8ff42a7793eb35d7274f4c- 1Kidneyfalse
- 2Pancreatictrue
- 3liverfalse
- 4Spleenfalse
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Answer : 2. "Pancreatic "
Q: It causes clotting of blood –
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5ee35cfb55d51a0f6482c48f- 1Thrombintrue
- 2Hemoglobinfalse
- 3Pectinfalse
- 4All of the abovefalse
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Answer : 1. "Thrombin "
Explanation :
The substance that causes the clotting of blood is:
(A) Thrombin
Thrombin is an enzyme that plays a crucial role in the blood clotting process. It is responsible for converting fibrinogen, a soluble plasma protein, into insoluble fibrin threads. These fibrin threads form a mesh that helps in the clotting of blood, particularly at the site of injury or wound. Therefore, option (A) Thrombin is the correct answer.
Q: Respiration occurs in orthopods?
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60363a60a0666c3c8506163a- 1Gilesfalse
- 2Tracheafalse
- 3Bumlangsfalse
- 4All of themtrue
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Answer : 4. "All of them"
Q: Which of the following viruses causes Smallpox?
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60acc6b15c11632d824ab59a- 1Rhino Virusfalse
- 2Varicella Virusfalse
- 3Enter Virusfalse
- 4Variola Virustrue
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