This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 11 Biotechnology Principles And Processes – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 16 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How does biotechnology contribute to environmental conservation? A) By promoting deforestation. B) By increasing the use of chemical fertilizers. C) By increasing fossil fuel consumption. D) By developing biodegradable plastics. Show Answer Correct Answer: D) By developing biodegradable plastics. 2. Which of the following describes why primers must be added to the thermocycler during a PCR? A) Polymerase requires an open 3' end. B) Polymerase requires an RNA template. C) Polymerase requires an open 5' end. D) Polymerase requires RNA for signaling. Show Answer Correct Answer: A) Polymerase requires an open 3' end. 3. The term for when all of the genes needed to synthesize a particular protein are located in the same location on a chromosome. A) Repressor. B) Inducer. C) Operon. D) Vector. Show Answer Correct Answer: C) Operon. 4. Transgenic animals are those that: A) Are cloned. B) Have foreign DNA inserted into their genome. C) Have undergone mutation. D) Have been irradiated. Show Answer Correct Answer: B) Have foreign DNA inserted into their genome. 5. Example of single cell protein A) Algae. B) Spirulina. C) Volvox. D) Chara. Show Answer Correct Answer: B) Spirulina. 6. Biotechnology uses a procedure called genetic engineering. Which best describes genetic engineering. A) Making artificial DNA in the laboratory from chemicals. B) Cutting out pieces of DNA from an organism under a microscope. C) Adding DNA from one organism into the DNA of another organism. D) None of the above. Show Answer Correct Answer: C) Adding DNA from one organism into the DNA of another organism. 7. What does a Blood Bank Technology Specialist do? A) Learn about toxins at the molecular level. B) Determine how emergencies are responded to. C) Perform tests on blood samples. D) Analyze evidence in criminal investigations. Show Answer Correct Answer: C) Perform tests on blood samples. 8. Enzymes which remove nucleotides from the ends of the D.N.A. are A) DNA polymerase. B) Exonucleases. C) Endonucleases. D) DNA Ligase. Show Answer Correct Answer: B) Exonucleases. 9. Which best represents a direct benefit from biotechnology to agriculture during an extended drought period? A) Planting crops only in shaded areas. B) Genetically modifying crops to be stress-tolerant. C) Harvesting crops that have thick stems and leaves. D) Watering crops with a recycled-water irrigation system. Show Answer Correct Answer: B) Genetically modifying crops to be stress-tolerant. 10. Scientists have been able to cause some bacteria to produce insulin. In which area of science would these scientists most likely work? A) D chemistry. B) C marine biology. C) B nuclear engineering. D) A biotechnology. Show Answer Correct Answer: D) A biotechnology. 11. What does a gel electrophoresis due for those that are studying DNA? A) Separating DNA into fragments. B) Making copies of DNA. C) Removing DNA from a cells nucleus. D) None of the above. Show Answer Correct Answer: A) Separating DNA into fragments. 12. If a pea plant were homozygous recessive for height, how would its alleles be represented A) Tt. B) Tt. C) TT. D) TT. Show Answer Correct Answer: A) Tt. 13. Related to microbes A) Biotechnology. B) Bioremediation. C) Microbial. D) Cloning. Show Answer Correct Answer: C) Microbial. 14. The principles of right and wrong A) Ethics. B) Genome. C) Agriculture. D) DNA. Show Answer Correct Answer: A) Ethics. 15. What is the primary purpose of using gel electrophoresis in biotechnology? A) To amplify DNA. B) To separate DNA fragments by size. C) To cut DNA at specific sites. D) To sequence DNA. Show Answer Correct Answer: B) To separate DNA fragments by size. 16. Which best describes a genetic mutation to a sequence of DNA that changes the way the sequence is read? A) Nonsense. B) Substitution. C) Silent. D) Frameshift. Show Answer Correct Answer: D) Frameshift. 17. The code that defines the characteristics of a particular organism (DNA). A) Genetic material. B) Genetic Modification. C) Genetics. D) None of the above. Show Answer Correct Answer: A) Genetic material. 18. In PCR denaturation of DNA is take place in ..... $^{0}$C temperature A) 120$^{0}$C. B) 94$^{0}$C. C) 40 to 55$^{0}$C. D) 72 $^{0}$C. Show Answer Correct Answer: B) 94$^{0}$C. 19. What is the significance of beta-carotene in human nutrition? A) It provides essential fatty acids. B) It is a source of protein. C) It is converted into vitamin A. D) It helps in the absorption of calcium. Show Answer Correct Answer: C) It is converted into vitamin A. 20. Multiple Choice Questions (1-25)-The thermostable enzyme used in PCR is: A) Taq polymerase. B) Ligase. C) DNAase. D) RNAase. Show Answer Correct Answer: A) Taq polymerase. 21. Agarose extracted from sea weeds finds use in A) Gel electrophoresis. B) Tissue culture. C) PCR. D) Spectrophotometry. Show Answer Correct Answer: A) Gel electrophoresis. 22. An application of using DNA technology to help environmental scientists would be ..... A) Make transgenic bacteria that can be used to clean up oil spills more quickly than do the natural bacteria. B) Create a tobacco plant that glows in the dark. C) Clone the gene for human growth hormone to treat pituitary dwarfism. D) Use PCR to analyze DNA at a crime scene. Show Answer Correct Answer: A) Make transgenic bacteria that can be used to clean up oil spills more quickly than do the natural bacteria. 23. What is the significance of using restriction enzymes in genetic engineering? A) They can cut DNA at specific sites for gene insertion. B) They speed up the process of transcription. C) They are used to destroy harmful bacteria. D) They help in the replication of DNA. Show Answer Correct Answer: A) They can cut DNA at specific sites for gene insertion. 24. Which is a question a scientist could investigate using principles of biotechnology? A) How long can a wheat plant live without water?. B) What are the effects of extreme cold on wheat plants?. C) Can wheat be genetically modified to be resistant to mold?. D) Which variety of wheat tastes best when made into pasta?. Show Answer Correct Answer: C) Can wheat be genetically modified to be resistant to mold?. 25. In genetic engineering, antibiotic resistance genes are used as? A) Expression units. B) Selectable markers. C) Promoters. D) Cloning sites. Show Answer Correct Answer: B) Selectable markers. 26. The science, art, or occupation concerned with cultivating land, raising crops, and feeding, breeding, and raising livestock; farming. A) Biotechnology. B) Agriculture. C) Economy. D) Bioremediation. Show Answer Correct Answer: B) Agriculture. 27. Which is least likely to show two species share a common ancestor? A) They have similar embryo development. B) They have analogous body structure. C) They have homologous body structure. D) They have similar genetic sequences. Show Answer Correct Answer: B) They have analogous body structure. 28. In gel electrophoresis DNA fragments are seperated on basis of? A) Base composition. B) Charge. C) Size (length). D) Sequence. Show Answer Correct Answer: C) Size (length). 29. What is the name of the international effort to sequence a human's DNA sequence? A) The DNA Fingerprinting Project. B) The Human Genome Project. C) The Gene Sequencing Project. D) The Nuremberg Trials. Show Answer Correct Answer: B) The Human Genome Project. 30. Using microorganisms to clean pollution/oil spills in the environment. A) Genetic modification. B) Bioremediation. C) Aquaculture. D) Biotechnology. Show Answer Correct Answer: B) Bioremediation. 31. In the context of biotechnology, what does the term 'bioethics' refer to? A) The study of biological processes. B) The ethical implications of biological research and applications. C) The economic benefits of biotechnology. D) The technological advancements in biology. Show Answer Correct Answer: B) The ethical implications of biological research and applications. 32. Statement I:Plasmid DNA acts as vectors to transfer the piece of DNA attached to it. Statement II:Vector DNA acts as plasmids to transfer the piece of DNA attached to it. A) Statement I is true, statement II is false. B) Statement I is false, statement II is true. C) Both the statements I and II are true. D) Both the statements I and II are false. Show Answer Correct Answer: A) Statement I is true, statement II is false. 33. This is the practice of cutting DNA and separating it by the size of the pieces A) Cloning. B) DNA Fingerprinting. C) Genetic Engineering. D) Gel Electrophoresis. Show Answer Correct Answer: D) Gel Electrophoresis. 34. DNA fingerprinting works because A) Most genes are dominant. B) All organisms contain RNA. C) The most important genes are different among most people. D) No two people, except identical twins, have exactly the same DNA. Show Answer Correct Answer: D) No two people, except identical twins, have exactly the same DNA. 35. What are some applications of capillary electrophoresis? A) DNA sequencing and DNA profiling. B) Protein synthesis and cell division. C) Photosynthesis and respiration. D) Fermentation and distillation. Show Answer Correct Answer: A) DNA sequencing and DNA profiling. 36. During electrophoresis, an electrical current must be present for DNA fragments to move throughout the gel. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 37. What ethical consideration is most important when conducting genetic research on human embryos? A) The potential for scientific breakthroughs. B) The long-term effects on human evolution. C) The consent and rights of the embryo. D) The financial cost of the research. Show Answer Correct Answer: C) The consent and rights of the embryo. 38. Which genetic engineering technique amplifies the number of DNA pieces in a lab setting? A) PCR. B) Gel Electrophoresis. C) Gene Therapy. D) CRISPR. Show Answer Correct Answer: A) PCR. 39. This is the practice of producing a genetically identical cell or organism A) DNA Fingerprinting. B) Genetic Engineering. C) Cloning. D) Gel Electrophoresis. Show Answer Correct Answer: C) Cloning. 40. In cloning experiments cDNA molecules can be obtained from an mRNA copy by A) PCR. B) Reverse Transcriptase. C) Ribozyme. D) DNA RNA Hybridisation. Show Answer Correct Answer: B) Reverse Transcriptase. 41. Horizontal gene transfer by plasmid is possible by A) Transformation. B) Conjugation,. C) Transformation & conjugation. D) Transduction,. Show Answer Correct Answer: C) Transformation & conjugation. 42. Which of the following is a common application of beta-carotene in food? A) As a natural food colorant. B) As a preservative. C) As a thickening agent. D) As a sweetener. Show Answer Correct Answer: A) As a natural food colorant. 43. What is a potential environmental benefit of using Aest Biotechnology in agriculture? A) Increased soil erosion. B) Higher water consumption. C) Increased use of chemical fertilizers. D) Reduction in pesticide usage. Show Answer Correct Answer: D) Reduction in pesticide usage. 44. MOLECULAR SCISSORS USED IN GENETIC ENGINEERING IS- A) RESTRICTION ENDONUCLEASE. B) DNA LIGASE. C) HELICASE. D) DNA POLYMERASE. Show Answer Correct Answer: A) RESTRICTION ENDONUCLEASE. 45. What are some examples of biotechnology being used in agriculture? A) Crop irrigation. B) DNA fingerprinting. C) Gentically modified crops. D) Crop rotation. Show Answer Correct Answer: C) Gentically modified crops. 46. Large molecules composed of many similar smaller molecules linked together in a chain-like fashion A) Mutagen. B) Polymer. C) Lambda hind 3. D) Methylene blue. Show Answer Correct Answer: B) Polymer. 47. In pBR 322vector of E.coli which option correctly identifies its components A) Amp$^{R}$, tet$^{R}$-Antibiotic resistance genes. B) Rop-Reduced osmotic pressure. C) Hind III, EcoR i-selectable markers. D) Ori-original restriction enzyme. Show Answer Correct Answer: A) Amp$^{R}$, tet$^{R}$-Antibiotic resistance genes. 48. Crops are often genetically engineered for improved traits. Such crops and organisms are called: A) Genetically modified organisms. B) Clones. C) Transformed. D) Nutritionally improved. Show Answer Correct Answer: A) Genetically modified organisms. 49. Which is not a concern regarding GMOs? A) Biodiversity effects. B) Health concerns. C) Environmental impact. D) Flavor enhancement. Show Answer Correct Answer: D) Flavor enhancement. 50. To alter the DNA of an organism in order to get the traits that are desired. A) Inbreeding. B) Genetic Engineering. C) Selective Breeding. D) Cloning. Show Answer Correct Answer: B) Genetic Engineering. 51. Antibiotics are used to treat viral infections A) True. B) False-Vaccines are used to treat viral infections. C) All the above. D) None of the above. Show Answer Correct Answer: B) False-Vaccines are used to treat viral infections. 52. Which is a way the agricultural industry could have a positive impact on the environment? A) By increasing the use of wind farms to produce electricity. B) By making robots to produce large farm machines. C) By reducing the need for countries to import food. D) None of the above. Show Answer Correct Answer: C) By reducing the need for countries to import food. 53. A robotic external structure used by disabled people who lost the mobility of their limbs A) Blades. B) Wheelchair. C) Device. D) Exo-skeleton. Show Answer Correct Answer: D) Exo-skeleton. 54. A ..... is a small ring of DNA found in a bacterial cell. A) Virus. B) Plasmid. C) Gene bullet. D) PCR. Show Answer Correct Answer: B) Plasmid. 55. Multiple Choice Questions (1-25)-The first restriction enzyme discovered was: A) BamHI. B) HaeIII. C) EcoRI. D) HindII. Show Answer Correct Answer: D) HindII. 56. Which is true about plasmids? A) Plasmids can be cut at specific sequences called restriction sites. B) Plasmids contain a promoter sequence that defines where transcription begins. C) Plasmids can contain an antibiotic resistance gene. D) All of the statements are true about plasmids. Show Answer Correct Answer: D) All of the statements are true about plasmids. 57. Cell lysis is carried out by which substance? A) Water. B) Lysozyme and detergents. C) Suphuric Acid. D) Sugar solution. Show Answer Correct Answer: B) Lysozyme and detergents. 58. Evaluates biomanufacturing processes, improves them, and scale them up for larger batches of materials. A) Product safety scientist. B) Process development associate. C) Processing technician. D) Product control associate. Show Answer Correct Answer: B) Process development associate. 59. Identify the product produced in a fermenter that can be used in the treatment of bacterial disease. A) Penicillin. B) Paracetamol. C) Mycoprotein. D) Insulin. Show Answer Correct Answer: A) Penicillin. 60. What is the advantage of growing a genetically modified version of corn that is resistant to pesticides? A) It is ready for immediate pesticide application to battle pest invasions. B) It is more efficient and economical to grow this variety of corn. C) It offers more nutrients and increases taste. D) The shelf life and profit of the corn would increase. Show Answer Correct Answer: A) It is ready for immediate pesticide application to battle pest invasions. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 1Class 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 2Class 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 3Class 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 4Class 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 5Class 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 6Class 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 7Class 12 Biology Chapter 11 Biotechnology Principles And Processes Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books