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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Assertion Transgenic plant production is an application of plant tissue culture. Reason An organism that contains and express a transgene is called transgenic organism.A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion.B. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is ture, but Reason is false.D. Assertion is false, but Reason is true. |
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Answer» Correct Answer - B Plant tissue culture has various applications in different fields of biology. An example of this is the production of transgenic plants and animals. Transgenic organisms contain geues, which are transferred through the genetic engineering. These genes are known as transgenes. |
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| 202. |
Medium used in culturing hybridoma cells isA. HATB. HAPC. TAPD. TAC |
| Answer» Correct Answer - A | |
| 203. |
Medium used in culturing hybridoma cells isA. HATB. HAPC. TAPD. TAC |
| Answer» Correct Answer - A | |
| 204. |
A branch of ethics, philosophy and social commentary that deals with the biological sciences and their impact on society is known asA. bioethicsB. biopatentC. biopiracyD. biowar |
| Answer» Correct Answer - A | |
| 205. |
Hybridoma technology has been successfully used in:A. production of somatic hybridsB. synthesis of monoclonal antibodisC. synthesis of haemoglobinD. production of alcohol in bulk |
| Answer» Correct Answer - B | |
| 206. |
Nexia biotechnologies spliced spider genes into the cells of lactatingA. CowB. SheepC. GoatD. Buffalo |
| Answer» Correct Answer - C | |
| 207. |
A set of standards by which a community regulates its behaviour and activities in relation to the biological world is termed asA. BiopatentB. BiopiracyC. PatentD. Bioethics |
| Answer» Correct Answer - D | |
| 208. |
Myeloma cells are used in hybridoma technology becauseA. they cannot grow in tissue cultureB. they can grow infinitelyC. tey are non - concerous cellsD. they are easily available |
| Answer» Correct Answer - B | |
| 209. |
Which is the most efective application of mionoclonal antibodies |
| Answer» The most effective clinical application of monoclonal antibodies is immune suppression for kidney transplatation | |
| 210. |
Monoclonal antibodies are obtained fromA. one parent for one antigenB. different parents for one antigenC. one parent for many antigensD. many parents for many antigens |
| Answer» Correct Answer - A | |
| 211. |
Monoclonal antibodies areA. single parent type that attack many antigensB. single parent type and attack specific antigenC. variour parent types and attack may antigensD. variour parent types and attack single antigen |
| Answer» Correct Answer - B | |
| 212. |
Transgenics have provided many pharamaceuticals in their milk, for treatment of diseases. Which one of the following has not been a successful story?A. PhenylketonuriaB. SCIDC. Emphysema (hereditary)D. CFTR |
| Answer» Correct Answer - B | |
| 213. |
Assertion; Monoclonal antibodies are ideal for diagnosis of diseases caused by closely related pathogens Reason Monoclonal antibodies are far more specific and reproducible than the antibodies produced by conventional techniquesA. If both Assertion and Reason are true and the Reason is a correct explanation of the AssertionB. If both Assertion and Reason are ture but Reason is not a correct explanation of the AssertionC. If Assertion is true but the Reason is falseD. If both Assertion and Reason are false |
| Answer» Correct Answer - A | |
| 214. |
Discuss briefly how a probe is used in molecular diagnostics. |
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Answer» Early detection of a disease is not possible by conventional diagnostic methods. So. Some techniques have been implanted for early diagnosis like PCR, recombinant DNA technology and ELISA. in recombinant DNA technology, a probe is used. It is allowed to hybridise to its complementary DNA in the clone of cells. the cells are then detected by autoradiography The cell with mutated gane will not be observed on the photographic film becuase the probe will not h ave complementarity with the mutated gene. |
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| 215. |
A doctor while operating on an HIV (+)ve patient accidentally cuts himself with a scalpel. Suspecting himself to have contracted the virus which test will he take to rule out/confirm his suspicion ?A. Serum analysisB. Unine analysisC. Blood analysisD. PCR |
| Answer» Correct Answer - D | |
| 216. |
Who observed that the fungus rhizopus stoleonifer cold bring abot hydroxylation of steriids |
| Answer» Murray and peterson (1950) | |
| 217. |
Name the first organic acid produced by microbial fermentation. |
| Answer» Correct Answer - Lactic acid | |
| 218. |
`alpha ` - 1 antirypsin isA. an antacidB. an enzymeC. used to treat arthritisD. used to treat emphysema |
| Answer» Correct Answer - B | |
| 219. |
Are the edible products of transgenic crops (or Genetically modified crops) safe for human consumption? |
| Answer» Transgenci crope are fast spreading to every nook and croner o fthe world .They had already occupied more than 100 million acres of the world farmland by the end o f2000 and in this sped they are surely going to occupy a widespread area in years to come .The important genetically modified crops includee soyabean corn and cotton which are being cultivated successfully and the field trials are being conducted for transgenci mustrad tomato brinjal cauliflower and cabbage however people are not easily accepting these crops as they apprehend that the products of these crops may cause some ill effects in the long therm they feel that t ampering with nature could alter species harm wild life give rise to new problems such as herbicide resistant supe weeds and moreover tehy may case allergicv reactions in humna body as tehy are armed with insectivied and foregin genses however there is no way out a arger part of the owrld has no as they are quntitavely as well as quantitatively bet ter then their counterparts Therefore the question whether the products fo t ransgenic crops are safe for human conusmption or not isa debatable issue and requires a wrod wide survey | |
| 220. |
Production of pest resistant plants couldA. Increase the amount of pesticide usedB. Increase the amount of weedicide usedC. Decrease the amount of pesticide usedD. Both (2) & (3) |
| Answer» Correct Answer - C | |
| 221. |
Which of the following crops till now has been genetically modified ?A. TobaccoB. TomatoC. CottonD. All of these |
| Answer» Correct Answer - D | |
| 222. |
Methods of producing microbe and pest resistant plants includeA. RNAiB. Use of Bt toxinC. Gene therapyD. Both (1) & (2) |
| Answer» Correct Answer - D | |
| 223. |
Main objective of production of herbicide resistant GM crops is toA. Reduce herbicide accumulation in food articles for health safetyB. Eliminate weeds from the field without the use of manual labourC. Eliminate weeds from the field without the use of herbicidesD. Encourage eco-friendly erbicides |
| Answer» Correct Answer - B | |
| 224. |
Which of the following is not an advantage of GM crops?A. Increased crop tolerance to salt in soilB. Increased reliance on chemical pesticidesC. Reduction in post harvest lossesD. Increased efficiency of mineral usage |
| Answer» Correct Answer - B | |
| 225. |
Main objective of production of herbicide resistant GM crops is toA. encourage eco friendly herbicidesB. reduce heribicide accumulation in food articles for health safetyC. eliminate weeds from the field wihtout the use of manula labourD. eliminate weeds from t he field without the use of heribicide |
| Answer» Correct Answer - B | |
| 226. |
Name the two types of fermentatioin processess |
| Answer» Batch process and continous process | |
| 227. |
Advantage of GM crops is /areA. NutritionB. Cold toleranceC. Disease resistnceD. All of these |
| Answer» Correct Answer - D | |
| 228. |
Define Biotechnology briefly. |
| Answer» Biotechnology is the controlled use of biological agents such as microorganisms or cellular components for beneficial use | |
| 229. |
What are the areas which have been responsible for the recent advances in biotechnology? |
| Answer» The areas in recent advances in biochenolgoy are (i) Agriculture (ii) Medicine (iii) Fod industry (iv) Fermentation technolgy (v) Environmental engineering and (iv) Genetic engineering | |
| 230. |
Name some fut ur e transgenci crops |
| Answer» Tansgenic tomatoes rice conola grapses tobacco coffee and tea | |
| 231. |
What are vaccines ? |
| Answer» Vaccine is the material containing daed or attenuated apthogen or its antignes which when injected into helathy person poroduces immunity to the natural pahtogne of htat particular disease | |
| 232. |
Human unsulin is being commerically prodcued form a transgenci species ofA. RhizobiumB. saccharomycesC. escherichiaD. mycobacterium |
| Answer» Correct Answer - C | |
| 233. |
Which two patents on india biological resurces have been revoked ? |
| Answer» On pesticides form neem and on helaing properites of turmeric | |
| 234. |
A parent is granted for I. an invention II.an improvement in an earliear invention. III.process of generating a product. IV.stains of microorganisms.A. Only IB. II and IVC. I, II and IVD. All of the above |
| Answer» Correct Answer - C | |
| 235. |
While creating genetically modified organisms, Genetic barriers are not respected. How can this be dangerous in the long run? |
| Answer» Genetic modification of organisms can have unpredictable results when such organisms are introduced into the ecosystem Because the real effects of gene manipulation are visible only when such organisms interact with other component s and organisms of the ecosystem. | |
| 236. |
Who is vandana shiva |
| Answer» She is a world renowned environmental leader and thinker | |
| 237. |
When does the Bt cotton was commerically planted |
| Answer» Bt cotton was commerically palnted for the first time in 1996/97 in austrialia and U.S.A | |
| 238. |
Many proteins are secreted in their inactive form . This is also true to may toxic proteins produced by microorganisms. Explain how the mechanism is useful for the organism producing the toxin ? |
| Answer» Many proteins including certain toxins are secreted in their inactive form. They get activated only when exposed to a specific trigger (pH. Temperature etc.) This mechanism is advantageous to the organism. (e.g., bacteria) producing the toxins, as the bacteria does not get killed by the action of proteins present in the toxin. | |
| 239. |
Write a short note on biopiracy highlighting the exploitation of developing countreis by the developed countries. |
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Answer» Biopiracy is the term used to refer the use of bio-resources by the multinational companies and other organisations without proper authorisation from the countries and from the people concerned without compensatory payment. Most of the industrialised nations are rich finanacially but poor in biodiversity and traditional knowledge. in contrast. the developing and the underdeveloped world is rich in biodiversity and traditional knowledge related to bio-resources. So, sometimes industrilaised nations tend to exploit the resources or biodiversity of developing nations, for their own advantages. |
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| 240. |
Mention the common items o biopiracy |
| Answer» Soil microoganisms plants and animlas and genetic material | |
| 241. |
Why would biopiracy affect india most ? |
| Answer» Because india is the rold richest country in bidiveristy | |
| 242. |
What is biopiracy? |
| Answer» Biopiracy refers to the theft or robbery of biological and genetic resources indigenous to a country | |
| 243. |
Name any two diseases the himgiri variety of wheat is restant to |
| Answer» The himgiiri variety of wheat is resistant to : (i) white rust (ii) bacterial blight | |
| 244. |
Consider the following statements. I. Bt toxin gene has been cloned from the bacteria. II. Genetic engineering works only on animals and has not yet been successfully used on plants. III. Strains of Bacillus thuringiensis are used in producing bioinsecticidal plants. Which of the statements given above are correct ?A. I and IIB. I and IIIC. II and IIID. I, II and III |
| Answer» Correct Answer - B | |
| 245. |
How many recombinant therapeutics worldwide have been approved for human use ?A. 12B. 30C. 42D. 27 |
| Answer» Correct Answer - B | |
| 246. |
How many recombinant therapeutics worldwide have been approved for human use ? |
| Answer» Correct Answer - Thirty (30) | |
| 247. |
The transgenic animals are those which haveA. foreign DNA in some of its cellsB. foreign DNA in all its cellsC. foreign RNA in al its cellsD. DNA ad RNA both in the cells |
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Answer» Correct Answer - B Transgenic animals have foreign DNA in all its cells. The animals which carry foreign genes are called transgenic animals. The foreig genes are inserted into the genome of animals using recombinant DNA technology or gene manipulation. |
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| 248. |
The first successfully cloned mammals (animal) that gained worldwide publicity wasA. Molly (a sheep)B. Polly (a sheep)C. Chance (a bull)D. Dolly (a sheep) |
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Answer» Correct Answer - D Dolly (a sheep) was the first successfully cloned mammals that gained worldwide publicity. |
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| 249. |
Introduction of food plants developed by genetic engineering is not desirable becauseA. economy of developing countries may sufferB. these products are less tasty as compared to the already existing productsC. this method is costlyD. there is danger of introduction viruses and toxins with introduced crop |
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Answer» Correct Answer - A It is difficult for developing countries to keep up and maintain genetically engineered crops. Therefore, introduction of food plants by genetic engineering is not desirable for developing contries. |
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| 250. |
(a) Name the sruce of taq polymerase explain the advantage of its use in biotechnology (b) Expand the name of the enzyme ADA why is this enzyme essential in human body ? Suggest a gene therapy for deficiency |
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Answer» (a) Taq polymerase was originally isolated form the thermophilic bactrium thermus aquaticus this enzyme is a thermostable DNA polymerause use in the process of PCR (Polymerase chain reacton ) Normally each rund of replication the mixture needs to obe heated above `90^(@)C` to denature the newly formed DNA allowing the strands to separate and act as templated in the next round .the enzyme taq polymerase is thermostable and eliminates the need for having to add new enzyme to PCR (b) ADA = Adenosine deaminase this enzyme is essential in human body to increase the immune sysem deficiency o fADaA in human body may reasult prepeated serious inflectio n ADA gene codes for the enzyme and therefore deficiency of ADA may be overcome by somatic gene therapy it can create funcntional ADA +T cells |
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