Biology Practice Question and Answer
8 Q: The endoplasmic reticulum was discovered?
1190 05ee83caca08a50198d8d021d
5ee83caca08a50198d8d021d- 1Portertrue
- 2Darwinfalse
- 3Huxleyfalse
- 4Purkinjefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Porter"
Q: H.Y.V. refers to –
1052 05f1554054cff381d16264d7b
5f1554054cff381d16264d7b- 1High Yielding Varietytrue
- 2Human Yellow Vaccinefalse
- 3Hybrid Yielding Varietyfalse
- 4Human Yellow Virusfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "High Yielding Variety "
Q: Which of the following is true of kinetochores? 3679 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
- Show AnswerHide Answer
- Workspace
- SingleChoice
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? 1767 05b5cc5ffe4d2b4197774b417
5b5cc5ffe4d2b4197774b417- 1transcriptiontrue
- 2replicationfalse
- 3translationfalse
- 4duplicationfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
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? 1254 05b5cc604e4d2b4197774b4f8
5b5cc604e4d2b4197774b4f8- 1Cytoplasmfalse
- 2Ribosomesfalse
- 3Mitochondriatrue
- 4None of the abovefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
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 –
1067 05ee35cfb55d51a0f6482c48f
5ee35cfb55d51a0f6482c48f- 1Thrombintrue
- 2Hemoglobinfalse
- 3Pectinfalse
- 4All of the abovefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
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?
4816 05ee83c6e642b74661722686c
5ee83c6e642b74661722686c- 12false
- 23true
- 34false
- 45false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "3"
Q: Hugging and kissing of mother to her baby initiates, which of the following hormone for secretion?
3001 05f155dbfcf79540a7533f7e7
5f155dbfcf79540a7533f7e7- 1Follicular Hormonefalse
- 2Oxytocintrue
- 3Insulinfalse
- 4Noradrenalinfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice