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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The probable metabolic defect in gents is (A) A defect in excretion of uric acid by kidney (B) An overproduction of pyrimidines (C) An overproduction of uric acid (D) Rise in calcium leading to deposition of calcium urate |
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Answer» (C) An overproduction of uric acid |
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| 2. |
Adenosine kinase can salvage (A) Adenosine (B) Adenosine and deoxyadenosine (C) Adenosine and guanosine (D) Adenine and adenosine |
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Answer» (B) Adenosine and deoxyadenosine |
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| 3. |
Deoxycytidine kinase can salvage (A) Adenosine (B) Adenosine and deoxyadenosine (C) Adenosine and guanosine (D) Adenine and adenosine |
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Answer» (D) Adenine and adenosine |
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| 4. |
A synthetic RNA having the sequence of UUUUUU (Poly U) will give a protein having poly ______. (A) Alamine (B) Phenyl alanine (C) Glycine (D) Methionine |
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Answer» (B) Phenyl alanine |
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| 5. |
The pyrimidine nucleotide acting as the high energy intermediate is (A) ATP (B) UTP (C) UDPG (D) CMP |
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Answer» The pyrimidine nucleotide acting as the high energy intermediate is UDPG. |
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| 6. |
The correct statement concerning RNA and DNA polymerases is (A) RNA polymerase use nucleoside diphosphates (B) RNA polymerase require primers and add bases at 5’ end of the growing polynucleotide chain (C) DNA polymerases can add nucleotides at both ends of the chain (D) All RNA and DNA polymerases can add nucleotides only at the 3’ end of the growing polynucleotide chain |
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Answer» (D) All RNA and DNA polymerases can add nucleotides only at the 3’ end of the growing polynucleotide chain |
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| 7. |
UDP and UTP are formed by phosphorylation from (A) AMP (B) ADP (C) ATP (D) GTP |
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Answer» Correct option (C) ATP |
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| 8. |
Reduction of ribonucleotide diphosphates (NDPs) to their corresponding deoxy ribonucleotide diphosphates (dNDPs) involves (A) FMN (B) FAD (C) NAD (D) NADPH |
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Answer» Correct option (D) NADPH |
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| 9. |
Cyclic AMP can be formed from (A) AMP (B) ADP (C) ATP (D) All of these |
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Answer» Correct option (C) ATP |
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| 10. |
Phosphorylation of adenosine to AMP is catalysed by (A) Adenosine kinase (B) Deoxycytidine kinase (C) Adenylosuccinase (D) Adenylosuccinate synthetase |
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Answer» (A) Adenosine kinase |
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| 11. |
According to the Watson Crick model how many polynucleotide chains does a DNA molecule have? |
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Answer» The DNA molecule is formed by two polynucleotide chains bound in antiparallel mode (5’-3’ to 3’-5’) and forming a helical structure. |
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| 12. |
Polysemes do not contain (A) Protein (B) DNA (C) mRNA (D) rRNA |
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Answer» Correct option (B) DNA |
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| 13. |
mRNA ready for protein synthesis has the poly _______ toil. (A) G (B) A (C) U (D) C |
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Answer» mRNA ready for protein synthesis has the poly A toil. |
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| 14. |
The mRNA ready for protein synthesis has the ________ cap. (A) ATP (B) CTP (C) GTP (D) UTP |
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Answer» The mRNA ready for protein synthesis has the GTP cap. |
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| 15. |
The genetic code operates through (A) The protein moiety of DNA (B) Cistrom of DNA (C) Nucleotide sequence of m RNA (D) The anticodons of tRNA |
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Answer» (C) Nucleotide sequence of m RNA |
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| 16. |
Methylated purines and pyrimidines are characteristically present in (A) mRNA (B) hnRNA (C) tRNA (D) rRNA |
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Answer» Correct option (C) tRNA |
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| 17. |
DNA synthesis in laboratory was first achieved by (A) Watson and crick (B) Khorana (C) A.Kornberg (D) Ochoa |
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Answer» (C) A.Kornberg |
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| 18. |
What carbon atom of deoxy ribose sugar in DNA does NOT contain `-overset(|)underset(|)C - OH` bond?A. `C_(5)`B. `C_(3)`C. `C_(2)`D. `C_(1)` |
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Answer» Correct Answer - C `C_(2) to` Removal oxygen from C-2. |
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| 19. |
The sugar moiety present in RNA is (A) Ribulose (B) Arabinose (C) Ribose (D) Deoxyribose |
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Answer» The sugar moiety present in RNA is Ribose. |
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| 20. |
DNA is (A) Usually present in tissues as a nucleo protein and cannot be separated from its protein component (B) A long chain polymer in which the internucleotide linkages are of the diester type between C-3’ and C-5’ (C) Different from RNA since in the latter the internucleotide linkages are between C-2’ and C-5’ (D) Hydrolyzed by weal alkali (pH9 to 100°C) |
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Answer» (B) A long chain polymer in which the internucleotide linkages are of the diester type between C-3’ and C-5’ |
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| 21. |
Thymine is present in (A) tRNA (B) Ribosomal RNA (C) Mammalian mRNA(D) Prokaryotic mRNA |
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Answer» Correct option (A) tRNA |
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| 22. |
Substitution of a thymine base by adenine in DNA is known as(A) Transposition (B) Transition (C) Transversion (D) Frameshift mutation |
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Answer» (C) Transversion |
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| 23. |
Whcih of the following compound is present in RNA but absent from DNA? (A) Thymine (B) Cytosine (C) Uracil (D) Guanine |
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Answer» Correct option (C) Uracil |
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| 24. |
Acid hydrolysis of ribonucleic acid would yield the following major products: (A) d- deoxyribose, cytosine, adenine (B) d-ribose, thymine, Guanine (C) d-ribose, cytosine, uracil, thymine (D) d-ribose, uracil, adenine, guanine, cytosine |
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Answer» (D) d-ribose, uracil, adenine, guanine, cytosine, |
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| 25. |
Alkalis cannot hydrolyse (A) mRNA (B) tRNA (C) rRNA (D) DNA |
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Answer» Correct option (D) DNA |
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| 26. |
In mammals, synthesis of mRNA is catalysed by (A) RNA polymerase I (B) RNA polymerase II (C) RNA polymerase III(D) RNA polymerase IV |
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Answer» (B) RNA polymerase II |
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| 27. |
Left handed double helix is present in (A) Z-DNA (B) A-DNA (C) B-DNA (D) None of these |
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Answer» Correct option (A) Z-DNA |
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| 28. |
Number of guanine and cytosine residues is equal in (A) mRNA (B) tRNA (C) DNA (D) None of these |
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Answer» Correct option (C) DNA |
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| 29. |
Replication of nuclear DNA in mammals is catalysed by (A) DNA polymerase α (B) DNA polymerase β (C) DNA polymerase γ (D) DNA polymerase III |
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Answer» (A) DNA polymerase α |
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| 30. |
The mitochondrial DNA is (A) Like the nuclear DNA in structure (B) Single stranded, linear (C) Double stranded, circular (D) Single stranded, circular |
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Answer» (C) Double stranded, circular |
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| 31. |
The eukaryotic nuclear chromosomal DNA (A) Is a linear and unbranched molecule (B) Is not associated with a specific membranous organelle (C) Is not replicated semiconservatively (D) Is about of the same size as each prokaryotic chromoses |
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Answer» (A) Is a linear and unbranched molecule |
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| 32. |
Amines are derivatives of ammonia and are classified as `1^@, 2^@ , and 3^@` Primary and secondary (but not teritary amines) form intermolecular hydrogen bonds and thus they boil at higher temperature than expected.Like ammonia, all amines are basic, although they differ in their basic nature.As amines are considered as derivatives of ammonia, quatemary ammonium salts are considered as derivatives of ammonium salts.Only the quatemary ammonium salts can show optical activity. Which of the following statement is correct ?A. All classes of amines form hydrogen bonds with each otherB. Only primary and secondary amines form hydrogen bonds with waterC. All classes of amines can form hydrogen bonds with waterD. All amines are completely soluble in water |
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Answer» Correct Answer - C All amine have a loan pair of electrons on N which enables them to form H-bond.However, tertiary amines although can form H-bond with water or other hydroxylic solvents, it does not form H-bond with its second molecule because of absence of H on N.only lower amines (`1^@,2^@` as well as `3^@`)are quite soluble in water solubility in water decreases with the increase in the size of the alkyl group. |
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| 33. |
Amines are derivatives of ammonia and are classified as `1^@, 2^@ , and 3^@` Primary and secondary (but not teritary amines) form intermolecular hydrogen bonds and thus they boil at higher temperature than expected.Like ammonia, all amines are basic, although they differ in their basic nature.As amines are considered as derivatives of ammonia, quatemary ammonium salts are considered as derivatives of ammonium salts.Only the quatemary ammonium salts can show optical activity. Which of the following shows configurationally isomerism ?A. Diethyldimethylammonium iodideB. MethylethylpropylamineC. Methylallylphenylbenzyl ammonium bromideD. None of the above |
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Answer» Correct Answer - C Quaternary ammonium salts having four different groups have tetrahedral arrangement and therefore exist as configurationally enantiomers. |
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| 34. |
Amines are derivatives of ammonia and are classified as `1^@, 2^@ , and 3^@` Primary and secondary (but not teritary amines) form intermolecular hydrogen bonds and thus they boil at higher temperature than expected.Like ammonia, all amines are basic, although they differ in their basic nature.As amines are considered as derivatives of ammonia, quatemary ammonium salts are considered as derivatives of ammonium salts.Only the quatemary ammonium salts can show optical activity. Methylethylpropyl amine is optically inactive becauseA. It is not tetrahedralB. Its molecules are superimposable on their mirror imageC. The enantiomers are rapidly interconverted into each otherD. the nitrogen is `sp^2` hybridized |
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Answer» Correct Answer - B Although the mirror image of `R_1 R_2 R_3` N type of amine is not superimposable on its object, yet the molecule is optically inactive because of rapid inversion of configuration between the two arrangements i.e. the two enantiomers are only hypothetical are not isolated. |
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| 35. |
Inulin is a polymer of (a) Glucose (b) Galactose (c) Fructose (d) Arabinose |
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Answer» Inulin is a polymer of Fructose. |
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| 36. |
What in Australia jumps along on its two hind legs and carries it’s baby in a pouch? |
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Answer» Correct option is kangaroo |
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| 37. |
A prey develops defense against a predator. Justify the statement with two examples in animals. Prey species have evolved to avoid Predators. Ex: Camouflage |
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Answer» 1. Some frogs and insects are cryptically coloured to avoid being detected easily by Predators. 2. Some species are poisonous to avoid Predators. Ex: Monarch butterfly is highly distasteful to predator bird. This distaste is due to chemical present in the body which is acquired during their caterpillar stage by feeding on a poisonous weed. |
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| 38. |
This is ________ . A) second lesson B) the lesson two C) lesson the second D) lesson two |
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Answer» Correct option is D) lesson two |
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| 39. |
These pens are ________ . A) Pats B) of Pat C) Pat’s D) to Pat |
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Answer» Correct option is C) Pat’s |
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| 40. |
What role does the law plays in control over utilization of opium and all matters relating to narcotic drugs and psychotropic substances? |
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Answer» Control over cultivation of opium and all matters relating to narcotic drugs and psychotropic substances are regulated by the Narcotic Drugs and Psychotropic Substances (NDPS) Act and Rules, which provide for:- (a) Punishment of upto 20 years rigorous imprisonment (RI) and fine up to rupees two lakhs for indulging in trafficking of narcotic drugs and psychotropic substances. (b) Death sentence in case of repeat of this offence. (c) Forfeiture of property of smugglers. (d) Regulating of legitimate trade and commerce of NDPS for medicinal and scientific purposes. The Prevention of Illicit Trafficking in Narcotic Drugs and Psychotropic Substances (PITNDPS), provides for the detention of persons indulging in trafficking of narcotic drugs for 1 to 2 years by an executive order. |
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| 41. |
Identify the various safety tips while going for rock climbing. |
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Answer» The various safety tips when you are out for rock climbing are: a) Always check harness b) Always check knots c) Always wear a helmet d) Always check the rope and belay device e) Always use a long rope – The climbing rope should reach the anchors and lower back down on a sport route or to f) Always pay attention – Keep notice of the instructions of the leader. Never divert your attention to mobile or other distractions. g) Always bring enough gear – Keep extra gears for emergency use. h) Always climb with the rope over your leg – This is important, otherwise you can hit your head. i) Always properly clip the rope – Avoid back clipping, where the rope runs front to back. Carabiner gate should face opposite your direction of travel. j) Always use safe anchors – Keep atleast 3 anchors. Always use a locking carabiner |
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| 42. |
We drink tea and coffee from it and it sits on a saucer. It’s a ______ |
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Answer» Correct option is cup |
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| 43. |
Where is the longest wall in the world? It’s in ______ |
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Answer» Correct option is China |
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| 44. |
Kings and queens live in this building. It’s a ______ |
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Answer» Correct option is castle |
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| 45. |
What is the “misadventure” that William Douglas speaks about? ORWhat were the series of emotions and fears that Douglas experienced when he was thrown into the pool? What plans did he make to come to the surface? |
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Answer» William Douglas, the narrator recounts a terrifying childhood experience when he came face to face with death. When he was 10 or 11 years old, he was tossed into a 9 feet deep swimming pool at YMCA by a bigger boy just for the sake of “fooling” or for fun. Although he was a beginner, Douglas did not lose heart and planned to push himself with all his force. He thought once he comes to the surface, he would peddle to the age of the pool. Unfortunately, this strategy did not work. He could not pop out of the water like a cork. His legs failed to support him. Terror gripped him with water all around him, did not know what to do. His lungs get ready to burst out and the pounding heart throbbing head made things worse. He could not scream and was frozen with fear. It seemed that the water around him was still and no amount of effort helped him. Suddenly, he felt there were tender arms around him and he was rescued. |
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| 46. |
How did this experience affect him? |
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Answer» After being rescued Douglas had lost consciousness and found himself beside the pool lying on his stomach and vomiting. This misadventure left him week and trembling. He shook seriously and cried at night. He could not eat anything and for days a haunting fear was knocking in his heart. The slightest exertion trouble him very much, making him weak from the bottom of his heart. |
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| 47. |
Why was Douglas determined to get over his fear of water? |
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Answer» After some years Douglas desperately wanted to get rid of his paralysing fear because any activity, bathing or in the water would bring back the icy horror of the pool. It was a terrible handicapped that had seized his mind completely. His legs would become paralysed thinking of the swimming pool incident. He wanted to overcome it because the terrified fear had removed his fishing trips and deprived him of the joy of boating and swimming. |
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| 48. |
How did the instructor “build a swimmer” out of Douglas? |
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Answer» Douglas agonising fear was ruining his life. He could not enjoy even the day to day activities related to water sports. Finally he decided to get an instructor and learn to swim. The instructor understood the magnitude and severity of the terror that gripped him. For 3 months Douglas repeatedly made to go back and forth across the pool. Then Douglas was taught to put his face underwater and exhale and to raise his nose and inhale. Later, for mixed together, he was made to kick with his legs at the side of pool. Then the instructor built a swimmer bit by bit and put each bit together into an integrated whole. Finally he told the narrator to swim with the narrator managed to do quite successfully. |
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| 49. |
How did his swimming instructor ‘build a swimmer’ out of Douglas? |
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Answer» The instructor adopted a systematic method to turn Douglas into a swimmer. He first made Douglas shed his initial fear of water by making him cross a pool suspended by a rope attached to a pulley. Then he taught him to breathe while swimming, and finally he taught him the leg movements and other strokes. |
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| 50. |
Form a new word by adding a suitable suffix to the root word “hyphen”. (a) ________ment (b) ________able(c) ________ed (d) ________ate |
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Answer» Correct answer is (d) hyphenate |
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