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Question Papers of BARC OCES Bioscience |

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Re: Question Papers of BARC OCES Bioscience
Here I am providing you previous years question papers of BARC OCES Bioscience for your preparation. 1) A fluorescent material is excited by uv light.emitted light will have wavelength a)same as that of excitation light b)longer than excitation light c)shorter than excitation light d)can not bepredicted 2) How many different linear peptide can be made from three different uncharged L-amino acid using each amino acid only once in the petide a)10 b)6 c)9 d)12 3) Simplest technique by which small molecular weight components can be removed from Protein solution is by: a)Ammonium persulfate solution b)Ion exchange chromatography c)Dialysis d)affinity chromatography 4) If the length of cob in maize is controlled by 3 genes (A,B,C)each with ability to increase the length by 2 cm,What would be length of cob on the plant with genotype AABbcC?(length of cob on plant with genotype aabbcc is 10 cm) a)10 cm b)16 cm c)18 cm d)26cm 5) Sweet taste of freshly picked corn is due to high level of sugar In its kernel.50% of free sugar of corn is converted into starch within 1 day of picking.Sweetness can,however be preserved if the husk ears are immersed in boiling water for a few mins and are then cooled in cold water.Biochemical basis for this procedure is a)Heating causes destruction of starch b)stabilization of free sugar c)destruction of enzyme that convert sugar to starch d)enhancement of enzyme that forms free sugar 6) In the inequality 2x+3y>5,x and y integer if x=1,y can be a)1 b)less than 1 c)greater than 1 d)1.5 7) 10 ml sample of HCl when titrated with 0.1M NaOH requires 7.2 ml of alkali to neutralize.W hat was pH of acid ? a)1.1 b)2.2 c)3.3 d)4.4 8) Doubling time of E.coli is 20 min in glucose and 30 mn in lactose containing medium.What will be the initial doubling time in a medium that contains both the sugar? a)20 min b)30 min c)25 min d)50 min 9) In metabolic pathway rate limiting step in determined by a)Enzyme with high turnover rate b) Enzyme with low turnover rate c)enzyme catalyzing first step in pathway d) enzyme catalyzing first step in pathway 10) Eukaryotic gene with 1542 base pairs code for enzyme with 120 amino acid residue.Number of base pair in intron of this gene a)514 b)360 c)1182 d)1150 11) A person tosses an unbiased coin 10 times.The first in tosses result in head.Chances of getting a head on next throw is a)1/2 b)1/10 c)1/6 d)4/10 12) A DNA fragment with three EcoR1 sites is lebelled at 5’ end. If it is partially digested with EcoR1,the resulting mixture will contain following fragment a)4 labelled and 6 unlabelled b)4 labelled and 4 unlabelled c)3 labelled and 5 unlabelled d)3 labelled and 3 unlabelled 13) Quantitatitate estimation of enzyme activity ,concentarion of substrate a)1KM b)less than 1 Km c)2 Km d)grater than 2 Km Previous Years Question Papers of BARC OCES Bioscience:BARC OCES Bioscience Paper 1Q.1) There are 40 coins in a bag, consisting of Rs. 5 and Rs. 2 coins. If the total amount is Rs. 140, how many Rs. 2 and Rs. 5 coins are there in the bag? (1) 20 each (2) 25 and 15 (3) 30 and 10 (4) 22 and 18 Q.2) 6(3 – x ) –5 (2 x – 4) = 4(3 x –) + 14 In the above equation the value of x is: (1) 3 (2) 2 (3) 1 (4) ½ Q.3) The first Indian Governor of the RBI was: (1) L.K.Jha (2) C.D.Deshmukh (3) I.G.Patel (4) None of these Q.4) X walked 35 metres towards South, then turned left and walked 25 metres, and again turned left and walked for 35 meters. He then turned to his ri ght and walked 20 metres. At what distance and direction from the starting point is X now standing? (1) 20m West (2) 45m East (3) 20m East (4) 45m North Q.5) The sum of the interior angles of a polygon is twice the sum of its exterior angles. How many sides does the polygon have? (1) 8 sides (2) 9 sides (3) 12 sides (4) 6 sides Q.6) Sam said to Rita “Your mohter’s husband’s sister is my aunt”. How is Rita related to Sam? (1) Daughter (2) Niece (3) Sister (4) Mother Q.7) Four years ago, the average age of A and B was 18 year s. At present the average age of A, Ba nd C is 24 years. What would be th e age of C after 8 years? (1) 30 years (2) 32 years (3) 28 years (4) 25 years Q.8) Unscramble the letters of words and find odd one out: (1) ORNI (2) ICAO (3) PPREOC (4) ZENRBO Q.9) Which is the greatest five digit number exactly divisible by 279? (1) 99603 (2) 99882 (3) 99550 (4) None of these Q.10) Oranges are bought at 5 for Rs. 10 and sold at 6 for Rs. 15. The profit or loss as percentage is: (1) 50% (2) 40% (3) 35% (4) 25% Q.11) Which country has won the cricket world cup maximum number of times? (1) West Indies (2) Pakistan (3) Sri Lanka (4) Australia Q.12) Which of the given Venn diagrams out of 1, 2, 3 or 4 correctly illustrates the relationship among the following classes? Reptiles, Cobras, Turtles. (1) (2) (3) (4) Q.13) Express 1999 2111 is decimal: (1) 0.946 (2) 0.904 (3) 0.893 (4) 0.981 Q.14) The marks obtained by 10 students in Science (out of 50) are 30, 41, 40, 41, 30, 41, 30, 28, 41, 40. The modal mark is: (1) 40 (2) 30 (3) 41 (4) 35 Q.15) 6, 18, 24, 9, 27, 33, 11?, ? (1) 15, 19 (2) 22, 27 (3) 33, 39 (4) 44, 47 Q.16) Which of the Venn diagrams relationship among the following classes? Cars, Scooters, Red. (1) (2) (3) (4) Q.17) X gives 1 2 of his property to his wife and 1 2 of the rest of his son. The remainder is divided equally to his two daughters. The sh are of each daughter is: (1) 1 8 (2) 1 6 (3) 1 4 (4) 2 3 Q.18) Karenge ya Marenge (Do or Die) was the slogan of which movement in India? (1) The Quit India Movement, 1921 (2) Salt Movement, 1930 (3) Non-Cooperation Movement, 1921 (4) Indigo revolt, 1859-60 Q.19) Xerophytes live predominantly in: (1) Ponds (2) Mountains (3) Deserts (4) Brackish water Q.20) The area of the base of a right cone is 154 m 2 and its volume is 308 m 2 . The height of the cone is: (1) 8 m (2) 6 m (3) 7 m (4) 9 m Q.21) The L.C.M. of two numbers is 12 times their H.C.F.. The sum of the H.C.F. and L.C.M. is 403. If one number is 93, then the other number is: (1) 134 (2) 124 (3) 128 (4) 310 Q.22) Jamshedpur is located on the bank of: (1) Damodar (2) Ganges (3) Subarnarekha (4) Musi Q.23) The wages of 10 workers for a six-day week is Rs. 1200. What are the one day’s wages of 4 workers? (1) Rs. 40 (2) Rs. 32 (3) Rs. 80 (4) Rs. 24 Q.24) All natural numbers and 0 are called the _______ numbers. (1) whole (2) prime (3) integer (4) rational Q.25) Judge : Justice : Censor: ? (1) Freedom (2) Morality (3) Entertainment (4) Halls ANSWERS 1. (1) 2. (3) 3. (2) 4. (2) 5. (1) 6. (3) 7. (1) 8. (4) 9. (2) 10. (4) 11. (4) 12. (2) 13. (1) 14. (3) 15. (3) 16. (4) 17. (1) 18. (1) 19. (3) 20. (2) 21. (2) 22. (3) 23. (3) 24. (1) 25. (3) BARC OCES Bioscience Paper 2NUMERICAL APTITUDE QUESTIONS 1 (95.6x 910.3) ÷ 92.56256 = 9? (A) 13.14 (B) 12.96 (C) 12.43 (D) 13.34 (E) None of these 2. (4 86%of 6500) ÷ 36 =? (A) 867.8 (B) 792.31 (C) 877.5 (D) 799.83 (E) None of these 3. (12.11)2 + (?)2 = 732.2921 (A)20.2 (B) 24.2 (C)23.1 (D) 19.2 (E) None of these 4.576÷ ? x114=8208 (A)8 (B)7 (C)6 (D)9 (E) None of these 5. (1024—263—233)÷(986—764— 156) =? (A)9 (B)6 (C)7 (D)8 (E) None of these 6. ?125÷5x ?=6265 (A)1253 (B) 1250 (C)1245 (D) 1550 (E) None of these 7.(42)2÷6.3 x 26 =? (A)7182 (B) 7269 (C)7260 (D) 7240 (E) None of these 8.384×12×2=? (A)9024 (B) 9216 (C)6676 (D) 6814 (E) None of these 9.6534÷40÷33=? (A)3.06 (B) 5.25 (C)4.82 (D) 6.12 (E) None of these 10. ?2704 x ?2209=? (A)1996 (B)2444 (C)2452 (D)1983 (E)None of these 11.2536+4851—?=3450+313 (A)3961 (B)4532 (C)3624 (D)4058 (E) None of these 12. (2560 x 1.4) +(7400 x 0.6) =? (A)7512 (B) 9746 (C)6523 (D) 8024 (E) None of these 13. 36%of 850+? %of 592 = 750 (A)73 (B)89 (C)82 (D)75 (E) None of these 14.64%of 2650+40% 0f 320=? (A)1824 (B) 1902 (C)1829 (D) 1964 (E) None of these 15. 486+32×25—59=? (A) 514 (B) 528 (C) 599 (D) 507 (E) None of these 16. 1827÷ 36 x ?=162.4 (A)4.4 (B)3.2 (C)2.1 (D) 3.7 (E) None of these 17. 1008÷36=? (A)28 (B) 32.5 (C)36 (D) 22.2 (E) None of these 18. 56.21 +2.36+5.41 —21.4+1.5=? (A)40.04 (B) 46.18 (C)44.08 (D) 43.12 (E) None of these 19. 65%of 320+?=686 (A) 480 (B) 452 (C)461 (D) 475 (E) None of these 20. 83250÷?=74×25 (A)50 (B) 45 (C)40 (D) 55 (E) None of these 21. ?7744=? (A)88 (B)62 (C)58 (D)78 (E)None of these 22.35%of ?=242 (A)729 (B)652 (C)693 (D)759 (E) None of these 23. 1256+4813+765=? (A)5642 (B) 5876 (C)6788 (D) 6878 (E) None of these 24. 22 x4+(?)2=(13)2 (A) 81 (C) 27 (B) 9 (D) 64 (E) None of these 25. 432+2170+35=? (A)494 (B) 475 (C)481 (D) 469 (E) None of these 26. Three numbers are in the ratio of 3: 4 :5 respectively. If the sum of the first and third numbers is more than the second number by 52, then which will be the largest number? (A) 65 (B) 52 (C) 79 (D) 63 (E) None of these 27. The compound interest on a certain amount for 2 years at the rate of 8 p.c.p.a. is Rs.312. What will be the simple interest on the same amount and at the same rate and same time? (A)Rs. 349.92 (B) Rs. 300 (C)Rs. 358.92 (D) Rs. 400 (E) None of these 28. The length of a rectangle exceeds its breadth by 7 ems. If the length is decreased by 4 cm. and the breadth is increased by 3 cms., then the area of the new rectangle will be the same as the area of the original rectangle. What will be the perimeter of the original rectangle? (A)45 cms. (B)40 cems. (C)50 cms. (D)55 cms. (E)None of these 29. The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then what will be the original number? (A)28 (B) 48 (C)39 (D) 93 (E) None of these 30. In a fraction, twice the numerator is two more than the denominator. If 3 is added to the numerator and the denominator each, then the resultant fraction will be 2/3 .What was the original fraction ? (A)5/18 (B)6/13 (C)13/6 (D)7/12 (E) None of these 31. Four-fifth of a number is 10 more than two-third of the same number. What is the number? (A) 70 (B) 75 (C) 69 (D) 85 (E) None of these 32. A shopkeeper purchased 200 bulbs for Rs. 10 each. However, 5 bulbs were fused and had to be thrown away. The remaining were sold at Rs. 12 each. What will be the percentage profit? (A) 25 (B) 15 (C) 13 (D) 17 (E) None of these 33. What should come in the place of question mark (?) in the number series given below? 25, 34, 52,79, 115,? (A)160 (B) 140 (C)153 (D) 190 (E)None of these 34. What number should replace both the question marks (?) in the following question ? ?/144= 49 /? (A)95 (B) 76 (C)82 (D) 84 (E)None of these 35. The sum of three consecutive even numbers is 252. What is the sum of the smallest and the largest numbers? (A)158 (B) 148 (C)168 (D) 198 (E) None of these 42. If 13 men can complete a piece of work in 36 days, then in how many days will 18 men complete the same work? (A)16 days (B) 20 days (C)26 days (D) 30 days (E) None of these 43. If the area of a circle is 75.44 square cm then what is the circumference of the circle? (A)29.2 cm (B) 28.9 cm (C)30.8 cm (D) 40.2 cm (E) None of these 44. Girish started a business investing Rs. 45,000. After 3 months, Vijay joined him with a capital of Rs. 60,000. After another 6 months, Ankush joined them with a capital of Rs. 90,000. At the end of the year, they made a profit of Rs. 16,500. What is Girish’s share of profit ? (A) Rs. 5,500 (B) Rs. 6,000 (C) Rs. 6,600 (D) As. 5,900 (E) None of these 45. What is the average age of a family of five members, whose ages are 42, 49, 56, 63 and 35 years respectively? (A)60 years (B) 49 years (C)45 years (D) 58 years (E) None of these 46. A and B are two taps which can fill a tank individually in 10 minutes and 20 minutes respectively. However, there is a leakage at the bottom which can empty a filled tank in 40 minutes. If the tank is empty initially, how much time will both the taps take to fill the tank (leakage is still there) ? (A) 8 minutes (B) 7 minutes (C) 10 minutes (D)15 minutes (E) None of these 47. What is 50% of 40% of Rs. 3,450? (A) Rs. 690 (B) As. 520 (C) Rs. 517.5 (D) Rs. 499.2 (E) None of these 48. If an amount of Rs. 5,86,700 is distributed equally amongst 25 persons, then how much would each person get? (A) Rs. 2,54,876 (B) Rs. 2,34,68 (C) Rs. 3,74,20 (D) Rs. 1,95,62 (E) None of these 49. An urn contains 9 blue, 7 white and 4 black balls. If 2 balls are drawn at random, then what is the probability that only one ball is white? (A) 71/190 (B) 121/190 (C) 91/190 (D) 93/190 (E) None of these 50. If the price of 5 transistors and 2 pen stands is Rs. 810, then what will be the price of 7 transistors and 9 pen stands? (A) Rs. 1,320 (B) Rs. 1,500 (C) Rs.1,150 (D) Cannot be determined (E) None of these ANSWERS: 1 - D 2 - C 3 - B 4 - A 5 - D 6 - A 7 - E 8 - B 9 - E 10 - B 11 - C 12 - D 13 - D 14 - A 15 - B 16 - B 17 - A 18 - C 19 - E 20 - B 21 - A 22 - C 23 - E 24 - B 25 - A 26 - A 27 - B 28 - C 29 - C 30 - D 31 - B 32 - D 33 - A 34 - D 35 - C 36 - A 37 - E 38 - A 39 - D 40 - B 41 - E 42 - C 43 - C 44 - A 45 - B 46 - A 47 - A 48 - B 49 - E 50 - D |

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Re: Question Papers of BARC OCES Bioscience
Here I am providing the list of few questions of Bhabha Atomic Research Center OCES Bioscience exam question paper which you are looking for . 1.Somatic cells are those Possible AnswersSelected Possible Answer lack mitochondria contain a diploid set of chromosomes and make up the majority of human cells give rise to gametes contains a haploid set of chromosomes 2. Which type of bonds link individual nucleotides together in DNA Possible AnswersSelected Possible Answer Glycosidic electroststic phosphodiester peptide 3. According to chargaff rule Possible AnswersSelected Possible Answer RNa is trancribed from DNA DNA is a gentic material Amount of adenine in a organism is equal to amount of thymine double helix is held together with H-bond between the bases 4. Transcriptome of a cell is defined as Possible AnswersSelected Possible Answer Protein coding RNA molecules present in the cell All RNA molecules present in the cell rRNA molecules present in the cell tRNA molecule present in the cell 5. Which type of functional RNA is a primary component of the structures required for protein synthesis Possible AnswersSelected Possible Answer rRNA snRNA mRNA tRNA 6. Which level of protein structure describes the folded confirmation of a multisubunit protein Possible AnswersSelected Possible Answer quaternary structure secondary structure primary structure tertiary structure 7. Which type of covalent bond is important for linking cysteine residues located at various places in a polypeptide Possible AnswersSelected Possible Answer peptide bond phosphodiester bond H-bond disulphide bridge 8. Which of the following enzymes are used to degrade DNA molecules Possible AnswersSelected Possible Answer Nucleases kinases Ligases DNA polymerases 9 Which technique is used to resolve the different sizes of DNA fragments following a restriction enzyme digest Possible AnswersSelected Possible Answer DNA sequencing Gel electrophoresis Gene cloning PCR 10 . DNA ligase synthesizes which type of bond Possible AnswersSelected Possible Answer H-bond between bases Peptide bond between amino acids Bond between bases and deoxyribose sugars phosphodiester bond between nucleotide 11. Which of the followinf polymerases not require a template Possible AnswersSelected Possible Answer DNA polymerase I Sequenase Terminal deoxynucleotidyl transferase Reverse transcriptase 12. E coli cells can take up plasmid DNA in laboratory by which method Possible AnswersSelected Possible Answer transduction Conjugation electrophoresis transformation |