Biology Practice Question and Answer
8Q: What organelle carries out photosynthesis? 1259 05b5cc607e4d2b4197774b53f
5b5cc607e4d2b4197774b53f- 1Chloroplaststrue
- 2Ribosomesfalse
- 3Chromosomesfalse
- 4All of the abovefalse
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Answer : 1. "Chloroplasts"
Explanation :
Answer: A) Chloroplasts Explanation: Chloroplasts contains chlorophyll, the green substance in plants that allows them to create food from carbon dioxide and water called as photosynthesis.
Q: The study of properties and method of biological systems found in nature and use of this knowledge in mechanical world is known as –
1560 05ee85e2ec9ddb00b8bda9b8d
5ee85e2ec9ddb00b8bda9b8d- 1Bionicstrue
- 2Bionomicsfalse
- 3Bionomyfalse
- 4Biometryfalse
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Answer : 1. "Bionics"
Explanation :
The study of properties and methods of biological systems found in nature and the application of this knowledge in the design and improvement of artificial systems is known as:
(A) Bionics
Explanation:
Bionics: Bionics is an interdisciplinary field that combines biology and engineering. It involves studying natural systems to understand their design and functionality and then applying this knowledge to create or improve artificial systems. The goal is to develop technologies inspired by nature. For example, designing a robot based on the principles observed in animal locomotion or creating materials inspired by the structure of biological tissues.
The other options:
Bionomics: This term is more commonly associated with the ecological study of organisms and their relationships with each other and their environment.
Bionomy: This term is not commonly used, and its meaning can vary in different contexts.
Biometry: Biometry usually refers to the statistical analysis of biological data.
Therefore, the correct answer is (A) Bionics.
Q: Which of the following is true of kinetochores? 3657 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? 1747 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? 1236 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 –
1058 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?
4788 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?
2971 05f155dbfcf79540a7533f7e7
5f155dbfcf79540a7533f7e7- 1Follicular Hormonefalse
- 2Oxytocintrue
- 3Insulinfalse
- 4Noradrenalinfalse
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