Biotechnology - Biotech Applications
Q. What is the main advantage of using biopesticides? (2022)
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A.
They are more effective than chemical pesticides
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B.
They are environmentally friendly
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C.
They are cheaper to produce
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D.
They have a longer shelf life
Solution
Biopesticides are derived from natural materials and are considered environmentally friendly compared to chemical pesticides.
Correct Answer: B — They are environmentally friendly
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Q. What is the main advantage of using CRISPR technology in genetic engineering? (2021)
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A.
High precision
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B.
Low cost
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C.
Speed of modification
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D.
All of the above
Solution
CRISPR technology offers high precision, low cost, and speed of modification, making it a powerful tool in genetic engineering.
Correct Answer: D — All of the above
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Q. What is the main advantage of using genetically modified organisms (GMOs) in agriculture? (2021)
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A.
Higher nutritional value
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B.
Increased resistance to diseases
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C.
Lower production costs
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D.
All of the above
Solution
GMOs can provide higher nutritional value, increased resistance to diseases, and lower production costs.
Correct Answer: D — All of the above
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Q. What is the main purpose of using genetically modified crops? (2023)
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A.
To produce more flowers
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B.
To enhance flavor
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C.
To improve resistance to diseases
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D.
To reduce labor costs
Solution
Genetically modified crops are primarily developed to improve resistance to diseases, pests, and environmental conditions.
Correct Answer: C — To improve resistance to diseases
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Q. What is the primary application of recombinant DNA technology in medicine? (2020)
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A.
Production of insulin
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B.
Gene therapy
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C.
Vaccines
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D.
All of the above
Solution
Recombinant DNA technology is used in various medical applications including the production of insulin, gene therapy, and vaccines.
Correct Answer: D — All of the above
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Q. What is the primary goal of gene therapy? (2021)
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A.
To clone organisms
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B.
To replace defective genes
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C.
To produce vaccines
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D.
To enhance crop traits
Solution
The primary goal of gene therapy is to replace defective genes in order to treat or prevent diseases.
Correct Answer: B — To replace defective genes
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Q. What is the primary purpose of using recombinant DNA technology in medicine? (2019)
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A.
To create vaccines
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B.
To produce antibiotics
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C.
To synthesize hormones
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D.
All of the above
Solution
Recombinant DNA technology is used to create vaccines, produce antibiotics, and synthesize hormones like insulin.
Correct Answer: D — All of the above
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Q. What is the primary use of bioremediation? (2023)
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A.
To produce biofuels
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B.
To clean up environmental pollutants
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C.
To enhance soil fertility
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D.
To increase crop yield
Solution
Bioremediation is primarily used to clean up environmental pollutants using microorganisms.
Correct Answer: B — To clean up environmental pollutants
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Q. What is the purpose of using CRISPR technology in biotechnology? (2023)
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A.
To clone organisms
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B.
To edit genes
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C.
To produce vaccines
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D.
To sequence DNA
Solution
CRISPR technology is primarily used for gene editing, allowing precise modifications to DNA.
Correct Answer: B — To edit genes
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Q. What is the purpose of using restriction enzymes in genetic engineering? (2023)
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A.
To cut DNA at specific sites
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B.
To amplify DNA
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C.
To sequence DNA
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D.
To repair DNA
Solution
Restriction enzymes are used to cut DNA at specific sequences, which is essential for cloning and genetic engineering.
Correct Answer: A — To cut DNA at specific sites
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Q. What is the role of Agrobacterium tumefaciens in biotechnology? (2021)
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A.
Gene delivery
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B.
Protein synthesis
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C.
Cell division
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D.
DNA replication
Solution
Agrobacterium tumefaciens is used as a vector for gene delivery in plant biotechnology.
Correct Answer: A — Gene delivery
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Q. What is the role of biopesticides in agriculture? (2021)
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A.
Increase soil fertility
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B.
Control pest populations
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C.
Enhance crop yield
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D.
Improve water retention
Solution
Biopesticides are used to control pest populations in an environmentally friendly manner, reducing the reliance on chemical pesticides.
Correct Answer: B — Control pest populations
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Q. What is the role of genetically modified organisms (GMOs) in agriculture? (2022)
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A.
Increase biodiversity
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B.
Reduce crop yield
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C.
Enhance resistance to pests
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D.
Decrease nutritional value
Solution
GMOs are engineered to enhance resistance to pests, thereby increasing crop yield.
Correct Answer: C — Enhance resistance to pests
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Q. What is the significance of Bt cotton? (2020)
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A.
It is resistant to drought
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B.
It produces its own insecticide
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C.
It has higher nutritional value
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D.
It grows faster than normal cotton
Solution
Bt cotton is genetically modified to produce a toxin that is harmful to specific pests, reducing the need for chemical insecticides.
Correct Answer: B — It produces its own insecticide
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Q. Which biotechnological application is used to produce insulin? (2018)
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A.
Fermentation
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B.
Gene cloning
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C.
Cell culture
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D.
Bioremediation
Solution
Gene cloning is used to produce insulin by inserting the human insulin gene into bacteria, which then produce insulin.
Correct Answer: B — Gene cloning
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Q. Which of the following is a biotechnological application in agriculture? (2020)
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A.
Production of insulin
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B.
Genetically modified crops
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C.
Gene therapy
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D.
DNA fingerprinting
Solution
Genetically modified crops are developed to enhance yield, resistance to pests, and tolerance to environmental stresses.
Correct Answer: B — Genetically modified crops
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Q. Which of the following is a biotechnological application in environmental management? (2022)
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A.
Bioremediation
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B.
Gene therapy
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C.
Cloning
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D.
Transgenic animals
Solution
Bioremediation uses microorganisms to degrade environmental contaminants, making it a key application in environmental management.
Correct Answer: A — Bioremediation
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Q. Which of the following is a biotechnological method used for the production of vaccines? (2021)
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A.
Fermentation
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B.
Cloning
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C.
Gene therapy
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D.
DNA sequencing
Solution
Fermentation is a biotechnological method used to produce vaccines by cultivating microorganisms.
Correct Answer: A — Fermentation
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Q. Which of the following is a common application of biotechnology in the food industry? (2020)
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A.
Fermentation
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B.
Genetic modification
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C.
Food preservation
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D.
All of the above
Solution
Biotechnology is widely used in the food industry for fermentation, genetic modification, and food preservation.
Correct Answer: D — All of the above
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Q. Which of the following is a common method for producing transgenic plants? (2022)
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A.
Microinjection
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B.
Agrobacterium-mediated transformation
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C.
Somatic cell nuclear transfer
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D.
CRISPR-Cas9
Solution
Agrobacterium-mediated transformation is a widely used method for producing transgenic plants by transferring genes into plant cells.
Correct Answer: B — Agrobacterium-mediated transformation
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Q. Which of the following is a genetically modified crop? (2019)
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A.
Bt cotton
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B.
Wheat
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C.
Rice
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D.
Barley
Solution
Bt cotton is a genetically modified crop that has been engineered to express a bacterial protein that is toxic to certain pests.
Correct Answer: A — Bt cotton
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Q. Which of the following is a method of bioremediation? (2019)
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A.
Using bacteria to clean oil spills
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B.
Using chemical fertilizers
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C.
Planting cover crops
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D.
Using pesticides
Solution
Bioremediation involves using microorganisms, such as bacteria, to degrade environmental contaminants like oil spills.
Correct Answer: A — Using bacteria to clean oil spills
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Q. Which of the following is a method used for cloning in plants? (2022)
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A.
Micropropagation
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B.
Electroporation
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C.
Transfection
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D.
PCR
Solution
Micropropagation is a method used for cloning plants by growing them from small tissue samples in a controlled environment.
Correct Answer: A — Micropropagation
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Q. Which of the following is a method used for gene cloning? (2023)
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A.
PCR
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B.
Gel electrophoresis
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C.
DNA sequencing
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D.
All of the above
Solution
PCR (Polymerase Chain Reaction) is a method used for amplifying DNA, which is essential in gene cloning.
Correct Answer: A — PCR
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Q. Which of the following is a method used in the production of insulin? (2018)
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A.
Fermentation
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B.
Photosynthesis
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C.
Transcription
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D.
Translation
Solution
Insulin is produced using fermentation processes involving genetically modified bacteria that can synthesize insulin.
Correct Answer: A — Fermentation
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Q. Which of the following is a product of biotechnology used in agriculture? (2019)
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A.
Insulin
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B.
Bt cotton
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C.
Human growth hormone
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D.
Vaccines
Solution
Bt cotton is a genetically modified organism (GMO) that has been engineered to express a bacterial toxin, making it resistant to certain pests.
Correct Answer: B — Bt cotton
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Q. Which of the following is an example of a genetically modified organism used in agriculture? (2023)
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A.
Golden rice
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B.
Organic wheat
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C.
Traditional maize
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D.
Heritage tomatoes
Solution
Golden rice is a genetically modified organism enriched with vitamin A to combat malnutrition.
Correct Answer: A — Golden rice
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Q. Which of the following is an example of a genetically modified organism? (2021)
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A.
Organic tomatoes
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B.
Bt corn
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C.
Heritage wheat
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D.
Wild strawberries
Solution
Bt corn is genetically modified to express a bacterial protein that provides resistance to certain pests.
Correct Answer: B — Bt corn
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Q. Which of the following is NOT a benefit of genetically modified organisms (GMOs)? (2022)
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A.
Increased resistance to pests
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B.
Higher nutritional value
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C.
Reduced agricultural yield
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D.
Drought resistance
Solution
Reduced agricultural yield is not a benefit of GMOs; in fact, they are designed to increase yield and resilience.
Correct Answer: C — Reduced agricultural yield
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Q. Which of the following is NOT a product of biotechnology? (2022)
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A.
Antibiotics
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B.
Hormones
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C.
Synthetic fibers
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D.
Fossil fuels
Solution
Fossil fuels are not products of biotechnology; they are natural resources formed from ancient organic matter.
Correct Answer: D — Fossil fuels
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