Q. Which of the following is a disadvantage of using gene guns for plant transformation?
A.
Low transformation efficiency
B.
Requires specific plant species
C.
Limited to monocots
D.
Expensive equipment
Show solution
Solution
Gene guns often have low transformation efficiency compared to other methods like Agrobacterium-mediated transformation.
Correct Answer:
A
— Low transformation efficiency
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Q. Which of the following is a key benefit of genetically modified crops?
A.
Increased pesticide use
B.
Higher crop yields
C.
Reduced nutritional value
D.
Longer growing seasons
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Solution
Genetically modified crops are often engineered to achieve higher yields and better resistance to pests.
Correct Answer:
B
— Higher crop yields
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Q. Which of the following is a key component of synthetic seeds?
A.
Natural soil
B.
Plant tissue culture
C.
Chemical fertilizers
D.
Pesticides
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Solution
Synthetic seeds are created using plant tissue culture techniques, which allow for the development of plant embryos.
Correct Answer:
B
— Plant tissue culture
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Q. Which of the following is a key consideration in the synthesis of therapeutic agents?
A.
Cost of raw materials
B.
Environmental impact
C.
Scalability of the process
D.
All of the above
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Solution
All of these factors are crucial in the synthesis of therapeutic agents.
Correct Answer:
D
— All of the above
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Q. Which of the following is a key factor in maintaining the viability of cultured animal cells?
A.
Temperature control
B.
High oxygen levels
C.
Low humidity
D.
Excessive nutrient concentration
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Solution
Temperature control is crucial for maintaining the viability of cultured animal cells, as they require specific conditions to thrive.
Correct Answer:
A
— Temperature control
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Q. Which of the following is a mechanism of nutrient uptake in plant roots?
A.
Facilitated diffusion
B.
Endocytosis
C.
Active transport
D.
All of the above
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Solution
Plants utilize facilitated diffusion, endocytosis, and active transport to absorb nutrients from the soil.
Correct Answer:
D
— All of the above
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Q. Which of the following is a method for introducing foreign DNA into animal cells?
A.
Electroporation
B.
Microinjection
C.
Viral vectors
D.
All of the above
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Solution
All of the listed methods—electroporation, microinjection, and viral vectors—are used to introduce foreign DNA into animal cells.
Correct Answer:
D
— All of the above
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Q. Which of the following is a method of creating genetically modified plants?
A.
Selective breeding
B.
Hybridization
C.
Gene cloning
D.
All of the above
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Solution
Gene cloning is a method used to create genetically modified plants by introducing specific genes.
Correct Answer:
C
— Gene cloning
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Q. Which of the following is a method to enhance the solubility of therapeutic agents?
A.
Salt formation
B.
Changing the pH
C.
Increasing temperature
D.
Decreasing particle size
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Solution
Salt formation is a common method used to enhance the solubility of therapeutic agents.
Correct Answer:
A
— Salt formation
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Q. Which of the following is a method used for DNA sequencing?
A.
Polymerase chain reaction
B.
Gel electrophoresis
C.
Sanger sequencing
D.
All of the above
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Solution
Sanger sequencing is a specific method used for DNA sequencing, while PCR and gel electrophoresis are techniques used in the process.
Correct Answer:
C
— Sanger sequencing
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Q. Which of the following is a method used to introduce special proteins into crops?
A.
Traditional breeding
B.
Gene editing
C.
Crop rotation
D.
Soil amendment
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Solution
Gene editing techniques, such as CRISPR, are used to introduce specific genes that code for beneficial special proteins.
Correct Answer:
B
— Gene editing
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Q. Which of the following is a potential ethical concern regarding transgenic animals?
A.
Increased food production
B.
Animal welfare issues
C.
Improved disease resistance
D.
Enhanced growth rates
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Solution
Animal welfare issues are a significant ethical concern regarding the creation and use of transgenic animals.
Correct Answer:
B
— Animal welfare issues
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Q. Which of the following is a potential risk of genetically modified crops?
A.
Increased biodiversity
B.
Development of resistant pests
C.
Higher crop yields
D.
Improved food security
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Solution
A potential risk of genetically modified crops is the development of resistant pests, which can lead to increased pest problems.
Correct Answer:
B
— Development of resistant pests
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Q. Which of the following is a potential side effect of consuming citric acid in large amounts?
A.
Tooth enamel erosion
B.
Increased energy
C.
Improved digestion
D.
Weight loss
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Solution
Consuming citric acid in large amounts can lead to tooth enamel erosion due to its acidity.
Correct Answer:
A
— Tooth enamel erosion
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Q. Which of the following is an example of a monoclonal antibody?
A.
Adalimumab
B.
Ibuprofen
C.
Aspirin
D.
Metformin
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Solution
Adalimumab is a monoclonal antibody used to treat autoimmune diseases.
Correct Answer:
A
— Adalimumab
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Q. Which of the following is NOT a benefit of plant cell culture?
A.
Disease-free plant production
B.
Rapid multiplication of plants
C.
Increased genetic diversity
D.
Conservation of endangered species
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Solution
Increased genetic diversity is not a benefit of plant cell culture, as it typically produces clones of the original plant.
Correct Answer:
C
— Increased genetic diversity
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Q. Which of the following is NOT a characteristic of a good cloning vector?
A.
High copy number
B.
Large size
C.
Multiple cloning sites
D.
Selectable markers
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Solution
A good cloning vector should be of a manageable size; large size can complicate cloning.
Correct Answer:
B
— Large size
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Q. Which of the following is NOT a characteristic of adherent cell cultures?
A.
Cells grow attached to a surface
B.
Cells can be easily passaged
C.
Cells grow in suspension
D.
Cells require a substrate for attachment
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Solution
Adherent cell cultures are characterized by cells growing attached to a surface, while suspension cultures do not require attachment.
Correct Answer:
C
— Cells grow in suspension
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Q. Which of the following is NOT a common application of vectors in animal cell culture?
A.
Gene expression studies
B.
Protein production
C.
Cellular metabolism analysis
D.
Gene therapy
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Solution
Cellular metabolism analysis is not a direct application of vectors; vectors are primarily used for gene expression, protein production, and gene therapy.
Correct Answer:
C
— Cellular metabolism analysis
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Q. Which of the following is NOT a method for introducing recombinant DNA into host cells?
A.
Electroporation
B.
Microinjection
C.
Transformation
D.
Natural selection
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Solution
Natural selection is not a method for introducing recombinant DNA into host cells; it is a process of evolution.
Correct Answer:
D
— Natural selection
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Q. Which of the following is NOT a method of introducing foreign DNA into plant cells?
A.
Agrobacterium-mediated transformation
B.
Gene gun (biolistics)
C.
Electroporation
D.
Natural selection
Show solution
Solution
Natural selection is not a method of introducing foreign DNA into plant cells; it is a process that occurs in nature.
Correct Answer:
D
— Natural selection
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Q. Which of the following is NOT a type of biochip?
A.
DNA microarray
B.
Protein microarray
C.
RNA sequencing chip
D.
Glucose meter
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Solution
A glucose meter is a device for measuring blood glucose levels, not classified as a biochip, which typically refers to microarrays for biomolecular analysis.
Correct Answer:
D
— Glucose meter
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Q. Which of the following is NOT a typical component of plant tissue culture media?
A.
Mineral salts
B.
Vitamins
C.
Antibiotics
D.
Proteins
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Solution
Proteins are not typically included in plant tissue culture media, while mineral salts, vitamins, and sometimes antibiotics are used.
Correct Answer:
D
— Proteins
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Q. Which of the following is NOT a use of vinegar in cooking?
A.
Marinades
B.
Pickling
C.
Baking soda neutralization
D.
Thickening agent
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Solution
Vinegar is not used as a thickening agent in cooking; it is more commonly used in marinades and pickling.
Correct Answer:
D
— Thickening agent
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Q. Which of the following practices can help reduce water pollution?
A.
Using pesticides excessively
B.
Properly disposing of hazardous waste
C.
Dumping chemicals in rivers
D.
Overusing fertilizers
Show solution
Solution
Proper disposal of hazardous waste is crucial in preventing water pollution.
Correct Answer:
B
— Properly disposing of hazardous waste
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Q. Which of the following techniques is commonly used to analyze chromosomes?
A.
PCR
B.
Karyotyping
C.
Gel electrophoresis
D.
Western blotting
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Solution
Karyotyping is a laboratory technique used to visualize and analyze the number and structure of chromosomes.
Correct Answer:
B
— Karyotyping
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Q. Which of the following traits can be introduced into transgenic plants?
A.
Herbicide resistance
B.
Increased susceptibility to diseases
C.
Reduced growth rate
D.
Lower nutritional content
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Solution
Herbicide resistance is a trait that can be introduced into transgenic plants, allowing them to survive applications of certain herbicides.
Correct Answer:
A
— Herbicide resistance
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Q. Which of the following traits is often targeted for improvement through plant breeding?
A.
Disease resistance
B.
Nutritional content
C.
Drought tolerance
D.
All of the above
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Solution
Plant breeding often targets multiple traits, including disease resistance, nutritional content, and drought tolerance.
Correct Answer:
D
— All of the above
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Q. Which of the following vectors can carry the largest DNA inserts?
A.
Plasmid vectors
B.
Viral vectors
C.
Bacterial artificial chromosomes
D.
Cosmids
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Solution
Bacterial artificial chromosomes (BACs) can carry larger DNA inserts compared to plasmids, viral vectors, or cosmids.
Correct Answer:
C
— Bacterial artificial chromosomes
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Q. Which organism is commonly used as a model in genetic studies due to its simple genome?
A.
Escherichia coli
B.
Homo sapiens
C.
Mus musculus
D.
Drosophila melanogaster
Show solution
Solution
Escherichia coli is widely used as a model organism in genetic studies due to its simple and well-understood genome.
Correct Answer:
A
— Escherichia coli
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