Biology Practice Question and Answer
8 Q: A normal healthy human's heart beats every minute—
823 05f746a8ebb26e87e5eead043
5f746a8ebb26e87e5eead043- 160 timesfalse
- 278 timesfalse
- 3120 timesfalse
- 472 timestrue
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Answer : 4. "72 times"
Q: Which of the following is true of kinetochores? 3680 05b5cc5ffe4d2b4197774b3f4
5b5cc5ffe4d2b4197774b3f4- 1They are the primary centrosome structures that maintain the attachment of the sister chromatids prior to mitosis.false
- 2They are the sites at which microtubules attach to chromosomes.true
- 3They are located at the center of the centrosome and organize tubulin into spindle fibers.false
- 4They cross at the cell's equator and move against each other, causing the cell to elongate.false
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Answer : 2. "They are the sites at which microtubules attach to chromosomes."
Explanation :
Answer: B) They are the sites at which microtubules attach to chromosomes. Explanation: They are the sites at which microtubules attach to chromosomes.
Q: What process immediately preceeded protein synthesis at the ribosome? 1769 05b5cc5ffe4d2b4197774b417
5b5cc5ffe4d2b4197774b417- 1transcriptiontrue
- 2replicationfalse
- 3translationfalse
- 4duplicationfalse
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Answer : 1. "transcription"
Explanation :
Answer: A) transcription Explanation: Protein synthesis at the ribosome is immediately preceeded by the transcription process.
Q: In what organelle does cellular respiration take place? 1256 05b5cc604e4d2b4197774b4f8
5b5cc604e4d2b4197774b4f8- 1Cytoplasmfalse
- 2Ribosomesfalse
- 3Mitochondriatrue
- 4None of the abovefalse
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Answer : 3. "Mitochondria"
Explanation :
Answer: C) Mitochondria Explanation: Cellular respiration is the multi-step process that creates energy from nutrients and food molecules. It begins in the cytoplasm of the cell, with the mitochondria functioning as the main organelle where the rest of the process continues and finishes. During respiration, glycolysis occurs in the cytoplasm of the cell.
Q: It causes clotting of blood –
1068 05ee35cfb55d51a0f6482c48f
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: How many types of lavaks are based on color?
4819 05ee83c6e642b74661722686c
5ee83c6e642b74661722686c- 12false
- 23true
- 34false
- 45false
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Answer : 2. "3"
Q: Hugging and kissing of mother to her baby initiates, which of the following hormone for secretion?
3004 05f155dbfcf79540a7533f7e7
5f155dbfcf79540a7533f7e7- 1Follicular Hormonefalse
- 2Oxytocintrue
- 3Insulinfalse
- 4Noradrenalinfalse
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Answer : 2. "Oxytocin"
Q: What type of diseases are typhoid and TB?
942 05fa113a2e4a5020b770e1238
5fa113a2e4a5020b770e1238- 1Viralfalse
- 2bacterialtrue
- 3Protajoafalse
- 4fungalfalse
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