IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Why are yeast cells frequently used as hosts for cloning? 3452 05b5cc690e4d2b4197774c438
5b5cc690e4d2b4197774c438- 1they are eukaryotic cellstrue
- 2they do not have plasmidsfalse
- 3only yeast cells allow the gene to be clonedfalse
- 4they easily form coloniesfalse
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उत्तर : 1. "they are eukaryotic cells"
व्याख्या :
Answer: A) they are eukaryotic cells Explanation: If you were to produce a protein in bacterial cloning systems, you would not get the same post transcriptional and post translational modifications because the prokaryotic and eukaryotic systems work differently on the modifications. Thus human recombinant protein genes are usually cloned in yeast cells. Also since they have a short generation time, they can be easily culture.
प्र: __________ कुकीज़ को क्षणिक कुकीज़ के रूप में भी जाना जाता है। 3451 55b5cc6c4e4d2b4197774dc95
5b5cc6c4e4d2b4197774dc95- 1दृढ़false
- 2दूसरा दलfalse
- 3सत्रtrue
- 4तृतीय पक्षfalse
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उत्तर : 3. "सत्र"
व्याख्या :
Answer: C) Session Explanation:
प्र: First Bank to introduce Credit Card in India 3450 05b5cc6b9e4d2b4197774d743
5b5cc6b9e4d2b4197774d743- 1HSBC Bankfalse
- 2ICICI Bankfalse
- 3State Bank of Indiafalse
- 4Central Bank of Indiatrue
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उत्तर : 4. "Central Bank of India"
व्याख्या :
Answer: D) Central Bank of India Explanation: First Bank to introduce Credit Card in India - Central Bank of India First Bank to introduce ATM - HSBC, 1987 First Bank to introduce Internet Banking - ICICI Bank First Bank to introduce Mutual Funds - State Bank of India
प्र: Tract of land used for raising crops or livestock. 3448 05b5cc683e4d2b4197774c283
5b5cc683e4d2b4197774c283- 1A fieldfalse
- 2A farmfalse
- 3Both A & Btrue
- 4None of the abovefalse
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उत्तर : 3. "Both A & B"
व्याख्या :
Answer: C) Both A & B Explanation: A tract of land used for raising crops or livestockcan be called a field or a farm.
प्र: How is my father's brother's only sibling's mother related to my sister's only brother ? 3441 05b5cc6e1e4d2b4197774ebc0
5b5cc6e1e4d2b4197774ebc0- 1Neicefalse
- 2Auntfalse
- 3Motherfalse
- 4Grand-mothertrue
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उत्तर : 4. "Grand-mother"
व्याख्या :
Answer: D) Grand-mother Explanation: My father's brother's only sibling is my father. My father's mother is my grandmother. My sister's only brother is myself. So she is my Grandmother.
प्र: The study of Heavenly bodies is called 3441 05b5cc6a2e4d2b4197774cbc7
5b5cc6a2e4d2b4197774cbc7- 1Astronomytrue
- 2Astrologyfalse
- 3Astrophysicsfalse
- 4Astronauticsfalse
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उत्तर : 1. "Astronomy"
व्याख्या :
Answer: A) Astronomy Explanation: Astronomy is the study of planets and heavenly bodies. Historically, astronomy has focused on observations of heavenly bodies. It is a close cousin to astrophysics. Succinctly put, astrophysics involves the study of the physics of astronomy and concentrates on the behavior, properties and motion of objects out there.
प्र: The value of a machine depreciates at the rate of 10% every year. It was purchased 3 years ago. If its present value is Rs. 8,748, its purchase price was ? 3439 05b5cc75ce4d2b4197774fc2f
5b5cc75ce4d2b4197774fc2f- 1Rs.14,000false
- 2Rs.12,000true
- 3Rs. 12,800false
- 4Rs. 15,000false
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उत्तर : 2. "Rs.12,000"
व्याख्या :
Answer: B) Rs.12,000 Explanation: We have P = 8748, R = -10 and n = 3Therefore, the purchase price of the machine= P1+R100n= 87481-101003= 8748 x (100/90) x (100/90) x (100/90)= 12,000. Therefore, the purchase price of the machine was Rs. 12,000.
प्र: A 300m race is held between two players running 3m/s and 5m/s in swimming pool of 50m long. how many times the two player meet in opposite direction till the faster one completes the race ? 3425 05b5cc754e4d2b4197774fb77
5b5cc754e4d2b4197774fb77- 13 timestrue
- 24 timesfalse
- 35 timesfalse
- 42 timesfalse
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उत्तर : 1. "3 times"
व्याख्या :
Answer: A) 3 times Explanation: Let us assume A is the faster and B is slower, A takes 10s to finish a lap of 50 m, B takes 17s(approx) to finish a lap of 50 m.So at 11th sec A starts his 2nd lap by the time B will be in between so that is the first time they will meet each other, at 21st sec A starts his 3rd lap by the time B will be coming back to finish his 2nd lap. So that is the second time they meet in opposite. Then at 31st sec A will start his 4th lap by the time B would not even finish 2nd lap as he take 34(2*17) sec to finish 2 laps. So at 35th sec B will start his 3rd lap by the time A will be coming back to finish his 4th lap in the half way so they will meet 3rd time. At 41st sec A will start its fifth lap by the time B will be going to finish 3rd lap in same direction. At 50th second both will complete A's 5th lap and B's 3rd lap. So they will start next lap(A's 6th and B's 4th) from the same point in same direction. And A will finish the race after completing 300m(6*50) total distance and then they wont meet opposite to each other. So totally they met 3 times in opposite direction.

