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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. |
Restriction endonucleases can recognise (A) Palindromic sequences (B) Chimeric DNA (C) DNA-RNA hybrids (D) Homopolymer sequences |
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Answer» (A) Palindromic sequences |
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| 2. |
Polymerase chain reaction can rapidly amplify DNA sequences of the size (A) Upto 10 kilobases (B) Upto 45 kilobases (C) Upto 100 kilobases(D) Upto 1,000 kilobases |
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Answer» (A) Upto 10 kilobases |
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| 3. |
Besides structural genes that encode proteins, DNA contains some regulatory sequences which are known as (A) Operons (B) Cistrons (C) Cis-acting elements (D) Trans-acting factors |
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Answer» (C) Cis-acting elements |
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| 4. |
Some DNA is present in mitochondria of (A) Prokaryotes (B) Eukaryotes (C) Both (A) and (B) (D) None of these |
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Answer» (B) Eukaryotes |
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| 5. |
The termination site for transcription is recognized by (A) α−Subunit of DNA-dependent RNA polymerase (B) β−Subunit of DNA-dependent RNA polymerase (C) Sigma factor (D) Rho factor |
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Answer» (D) Rho factor |
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| 6. |
The mechanism of synthesis of DNA and RNA are similar in all the following ways except (A) They involve release of pyrophosphate from each nucleotide added (B) They require activated nucleotide precursor and Mg2+ (C) The direction of synthesis is 5’ → 3’ (D) They require a primer |
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Answer» (A) They involve release of pyrophosphate from each nucleotide added |
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| 7. |
Fungi constitute a unique kingdom of heterotrophic organisms. About their reproduction which combination is not true : (1) Fragmentation, Fission, Budding (2) Conidia, Sporangiospores, Zoospores (3) Oospore, Ascospore, Basidiospores (4) Fragmentation, Zoospores, Ascospore |
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Answer» Correct option is (4) Fragmentation, Zoospores, Ascospore |
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| 8. |
Satellite DNA contains (A) Highly repetitive sequences (B) Moderately repetitive sequences (C) Non-repetitive sequences (D) DNA-RNA hybrids |
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Answer» (A) Highly repetitive sequences |
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| 9. |
On the basis of intervening dikaryotic stage which of the following fungal group is odd : (1) Phycomycetes (2) Basidiomycetes (3) Ascomycetes (4) Club fungi |
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Answer» Correct option is (1) Phycomycetes |
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| 10. |
Template-directed DNA synthesis occurs in all the following except (A) The replication fork (B) Polymerase chain reaction (C) Growth of RNA tumor viruses (D) Expression of oneogenes |
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Answer» (C) Growth of RNA tumor viruses |
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| 11. |
During replication, the template DNA is unwound (A) At one of the ends (B) At both the ends (C) At multiple sites (D) Nowhere |
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Answer» (C) At multiple sites |
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| 12. |
After termination of the synthesis of RNA molecule, the core enzymes separate from the DNA template. The core enzymes then recognize a promoter at which the synthesis of a new RNA molecule commences, with the assistance of (A) Rho (ρ) factor (B) δ factor (C) β factor (D) σ factor |
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Answer» (D) σ factor |
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| 13. |
Choose the incorrect statement about phycomycetes :- (1) Members are found in aquatic habitats (2) Spores are endogenously produced in sporangium (3) Zygospore is formed by reduction division (4) Its members reproduce sexually may be isogamous, anisogamous or oogamous. |
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Answer» Correct option is (3) Zygospore is formed by reduction division |
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| 14. |
Kingdom fungi classify into various classes based on some parameters except : (1) Morphology of mycelium (2) Mode of spore formation (3) Dikaryophase (4) Fruiting body |
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Answer» Correct option is (3) Dikaryophase |
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| 15. |
Synthesis of RNA and a DNA template is known as (A) Replication (B) Translation (C) Transcription (D) Mutation |
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Answer» (C) Transcription |
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| 16. |
Ones perfect (Sexual) stages of members of deuteromycetes were discovered they were often moved to (1) Phycomycetes (2) Ascomycetes only (3) Basidiomycetes only (4) Either ascomycetes or basidiomycetes |
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Answer» Correct option is (4) Either ascomycetes or basidiomycetes |
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| 17. |
Which of the following is not applicable on phycomycetes : (1) Obligate parasites on plants (2) Found in moist and damp places (3) Septate, Coenocytic mycelium (4) Endogenously produced spores |
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Answer» Correct option is (3) Septate, Coenocytic mycelium |
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| 18. |
In which class of fungi generally sex organs are absent but plasmogamy is brought about by fusion of two vegetative or somatic cells which have different strains or genotypes. (1) Phycomycetes (2) Ascomycetes (3) Basidiomycetes (4) Deuteromycetes |
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Answer» Correct option is (3) Basidiomycetes |
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| 19. |
Taq DNA polymerase enzyme is obtained from- (a) Thermus aquaticus (b) Agrobacterium tumifaciens (c) Aspergillus flavus (d) Escherichia coli |
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Answer» Taq DNA polymerase enzyme is obtained from Thermus aquaticus. |
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| 20. |
The long term prospects for a truly human civilisation depend in a large measure onA. the ability of humanity to moderate its fecundityB. increasing the food productionC. colonisation of under polulated areaD. control of human diseases |
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Answer» Correct Answer - D The long term propects for a truly human civisation depend on alargemeasure on control of human disease. |
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| 21. |
Before the European invaders which vagetable was/were absent in india?A. potato and tomatoB. capsicum and brinjalC. maize and bottle gourdD. bitter gourd |
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Answer» Correct Answer - A potato and tomato originated in the new world they were absent inn india previously. |
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| 22. |
Solute `A` is a ternary electrolyte and solute `B` is non-elctrolyte ,if`0.1`M solution of solute`B` produces an osmotic pressure of `2P`,then `0.05M`solution of `A`at the same temperature will produce on osmotic pressure equal toA. `2P`B. `1.5P`C. `3P`D. none of these |
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Answer» Correct Answer - B 0.05 M solution of `A=3xx0.05M` ion 0.2M solution of B has osmotic pressure `=2P` `because0.15M` solution will have osmotic pressure `=(2P)/(0.2)xx0.15=1.5P` |
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| 23. |
Addition of phosphate fertilizers into water leads to (a) Increased growth of decomposers (b) Reduced algal growth (c) Increased algal growth (d) Nutrient enrichment |
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Answer» (d) Nutrient enrichment |
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| 24. |
Identify the optically active stereoisomer of benzene hexachloride (BHC).A. B. C. D. |
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Answer» Correct Answer - A Options (1) and (3) have plane of symmtery and option (4) has centre of symmtery so thay are optically inactive. Option (2) does not have plane & centre of symmtry so it is optically active. |
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| 25. |
What is parturition? Which hormones are involved in induction of parturition? |
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Answer» Parturition is the process of giving birth to a baby as the development of the foetus gets completed in the mother’s womb. The hormones involved in this process are oxytocin and relaxin. Oxytocin leads to the contraction of smooth muscles of myometrium of the uterus, which directs the full term foetus towards the birth canal. On the other hand, relaxin hormone causes relaxation of the pelvic ligaments and prepares the uterus for child birth. |
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| 26. |
Who was the first prime minister of India? |
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Answer» Jawaharlal Nehru is the first Prime Minister of independent India and played a significant role in shaping modern India by imparting modern values and thinking. He was a social reformer and one of his major work towards society was the reform of the ancient Hindu civil code. It permitted Hindu widow to enjoy equal right with men as far as property and inheritance was concerned. |
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| 27. |
Explain the functions of myometrium and endometrium in human females |
Answer»
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| 28. |
What are some fungal diseases transmitted by animal feces? |
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Answer» Bat and pigeon feces can carry Histoplasma capsulatum, the fungus agent of histoplasmosis. The infection is transmitted through inhalation of contaminated dust in places visited by these animals (caves, tunnels, squares, roofs, etc.). Cryptococcosis is another fungal disease transmitted by pigeon excrement. |
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| 29. |
The ______ discovery of penicillin by Fleming in 1928 made the effective treatment of many bacterial diseases possible. A) accidental B) by chance C) accident D) accidentally |
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Answer» Correct option is B) destruction / disappearance |
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| 30. |
How many of the following drugs is/are example(s) of broad spectrum antibiotic?Ofloxacin, Penicillin G, Terpineol, Salvarsan |
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Answer» Correct answer is 1. Ofloxacin |
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| 31. |
Which of the following is not a broad spectrum antibiotic? (A) Vancomycin (B) Ampicillin (C) Ofloxacin (D) Penicillin G |
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Answer» Correct option is (D) Penicillin G Penicillin G following is a narrow spectrum antibiotic |
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| 32. |
Name a microbe used for statin production. How do statins lower bloodcholesterol level? |
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Answer» Monascus purpureus statins lower blood cholesterol level by competitively |
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| 33. |
Insecticide which block the insect spiracles are a. Muscle poison b. Physical poisons c. Narcotic d. None |
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Answer» b. Physical poisons |
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| 34. |
Amphibians among plants belong to- (A) Algae (B) Bryophytes (C) Fungi (D) Pteridophytes |
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Answer» (B) Bryophytes |
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| 35. |
Synthesis of RNA on DNA template is known as(A) Translation(B) Transcription(C) Transduction(D) Replication |
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Answer» Answer (B) Transcription |
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| 36. |
Which of the following is wrong pair?(A) G = C(B) T = A(C) A = U(D) T = U |
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Answer» Answer (C) A = U |
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| 37. |
Amphibians among plants belong to(A) Algae(B) Bryophytes(C) fungi(D) Pteridophytes |
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Answer» Answer (B) Bryophytes |
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| 38. |
Give an example for chemical carcinogen that causes cancer. |
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Answer» Alcohol or tobacco or coal tar or coal gas or asbestos cement etc |
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| 39. |
RNAi is used to control pests on which plant (A) Tobacco (B) Mango (C) Potato (D) Poppy |
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Answer» (A) Tobacco.. |
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| 40. |
Cry IAb controls(A) Corn Borer(B) Wheat Rust(C) Cotton insects(D) Maize height insects |
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Answer» Answer (A) Corn Borer |
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| 41. |
For Nitrogen fixation in soil we may use (A) Cyanobacteria (B) Protozoans (C) Nematodes (D) Wheat plants |
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Answer» (A) Cyanobacteria |
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| 42. |
Breast feeding during the initial period of infant growth is recommended. Give reason? |
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Answer» The yellowish milk (colostrum) secreted from mammary glands during the initial days contains antibodies (IgA) to boost the development of immune system of the child. |
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| 43. |
Cry IAb controls- (A) Corn Borer (B) Wheat Rust (C) Cotton insects (D) Maize height insects |
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Answer» (A) Corn Borer |
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| 44. |
Why does the logistic growth curve becomes S shaped? |
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Answer» In sigmoid growth unlimited resources are rare, population growth is, therefore becomes stable due to environmental resistance. |
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| 45. |
A logistic growth curve depicting a population that is limited by a definite carrying capacity is shaped like the letter :A. JB. FC. MD. S |
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Answer» Correct Answer - D (D) A logistic growth curve depicting population that is limited by carrying capacity is shaped like the latter S. |
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| 46. |
What are the shortcomings of ecological pyramids in the study of ecosystem? |
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Answer» The ecological pyramid assumes a simple food chain and does not accommodate food webs. Thereby, it does not take into account the fact that species may belong to two or more trophic levels at a time. Also saprophytes despite their vital role in ecosystem are given no place in the ecological pyramids. |
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| 47. |
When you communicate with your teachers, you basically use verbal communications, that can be of two types, those are: a) Languages and Sounds b) Gestures and Body languages c) Sign and signals d) Body language and written form |
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Answer» Correct option: a) Languages and Sounds |
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| 48. |
A simple sentence is one independent clause that has two main components and express a complete thought. What are those two components? a) a subject and a verb b) a noun and a pronoun c) an adjective and a pronoun d) a noun and an adjective |
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Answer» Correct option: a) a subject and a verb |
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| 49. |
Assertion: Acquired trait cannot be passed to progeny, while inherited traits can be. Reason: Acquired trait do not bring changes in the DNA of germ cell instead bring in somatic cells, while genes of inherited traits are present in DNA of germ cell.a) Both A and R are true, and R is correct explanation of the assertion. b) Both A and R are true, but R is not the correct explanation of the assertion. c) A is true, but R is false. d) A is false, but R is true. |
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Answer» a) Both A and R are true, and R is correct explanation of the assertion. |
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| 50. |
Is culture an acquired trait. |
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Answer» Yes, Culture an acquired or learnt. |
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