Biotechnology MCQ & Objective Questions
Biotechnology is a crucial subject for students preparing for school and competitive exams in India. Understanding its concepts can significantly enhance your performance. Practicing MCQs and objective questions in Biotechnology not only helps in reinforcing your knowledge but also boosts your confidence in tackling important questions during exams.
What You Will Practise Here
Fundamentals of Genetic Engineering
Applications of Biotechnology in Medicine
Biotechnological Techniques: PCR, Cloning, and Sequencing
Microbial Biotechnology and its Industrial Applications
Plant Biotechnology: GMOs and Tissue Culture
Ethical Issues in Biotechnology
Important Definitions and Key Formulas
Exam Relevance
Biotechnology is a significant topic in various examinations, including CBSE, State Boards, NEET, and JEE. Students can expect questions related to the applications of biotechnology, techniques used in genetic engineering, and ethical considerations. Common patterns include multiple-choice questions that test conceptual understanding and application of theories in real-world scenarios.
Common Mistakes Students Make
Confusing different biotechnological techniques and their applications.
Overlooking ethical implications and regulations related to biotechnology.
Misunderstanding the role of enzymes in biotechnological processes.
Failing to connect theoretical concepts with practical applications.
FAQs
Question: What are some key areas to focus on in Biotechnology for exams?Answer: Focus on genetic engineering techniques, applications in medicine, and ethical issues.
Question: How can I improve my performance in Biotechnology MCQs?Answer: Regular practice of objective questions and understanding key concepts will help you score better.
Don't wait any longer! Start solving Biotechnology MCQs today to test your understanding and prepare effectively for your exams. Your success in mastering this subject is just a practice question away!
Q. Which organism is often used as a host for recombinant DNA technology?
A.
Humans
B.
Bacteria
C.
Plants
D.
Fungi
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Solution
Bacteria, such as E. coli, are often used as hosts for recombinant DNA technology due to their rapid growth and ease of manipulation.
Correct Answer:
B
— Bacteria
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Q. Which organism is primarily responsible for nitrogen fixation in the soil?
A.
Rhizobium bacteria
B.
Mycorrhizal fungi
C.
Cyanobacteria
D.
Actinomycetes
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Solution
Rhizobium bacteria form symbiotic relationships with leguminous plants and are key players in nitrogen fixation.
Correct Answer:
A
— Rhizobium bacteria
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Q. Which part of the plant anchors it to the ground?
A.
Stem
B.
Leaf
C.
Root
D.
Flower
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Solution
The root anchors the plant to the ground and provides stability.
Correct Answer:
C
— Root
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Q. Which part of the plant is responsible for reproduction?
A.
Roots
B.
Stems
C.
Leaves
D.
Flowers
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Solution
Flowers are the reproductive structures in flowering plants.
Correct Answer:
D
— Flowers
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Q. Which phase follows the M phase in the cell cycle?
A.
G1 phase
B.
S phase
C.
G2 phase
D.
Interphase
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Solution
The G1 phase follows the M phase, marking the beginning of a new cell cycle after division.
Correct Answer:
A
— G1 phase
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Q. Which phase of the cell cycle is known for cell division?
A.
G1 phase
B.
S phase
C.
G2 phase
D.
M phase
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Solution
The M phase is where mitosis occurs, leading to the division of the cell into two daughter cells.
Correct Answer:
D
— M phase
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Q. Which pigment is primarily involved in photosynthesis?
A.
Chlorophyll
B.
Carotene
C.
Xanthophyll
D.
Phycobilin
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Solution
Chlorophyll is the primary pigment that captures light energy for photosynthesis.
Correct Answer:
A
— Chlorophyll
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Q. Which plant hormone is primarily associated with shoot development in culture?
A.
Cytokinins
B.
Gibberellins
C.
Ethylene
D.
Abscisic acid
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Solution
Cytokinins are primarily associated with promoting shoot development in plant cell culture.
Correct Answer:
A
— Cytokinins
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Q. Which plant hormone is primarily involved in the regulation of gene expression during stress responses?
A.
Auxin
B.
Gibberellin
C.
Abscisic acid
D.
Cytokinin
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Solution
Abscisic acid plays a crucial role in plant stress responses, including drought and salinity.
Correct Answer:
C
— Abscisic acid
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Q. Which plant tissue is most commonly used for transformation via Agrobacterium?
A.
Meristematic tissue
B.
Callus tissue
C.
Xylem tissue
D.
Phloem tissue
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Solution
Callus tissue is commonly used for transformation because it can regenerate into whole plants and is more amenable to transformation.
Correct Answer:
B
— Callus tissue
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Q. Which process is essential for creating synthetic seeds?
A.
Photosynthesis
B.
Micropropagation
C.
Grafting
D.
Hybridization
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Solution
Micropropagation is essential for creating synthetic seeds, as it involves growing plant tissues in a controlled environment.
Correct Answer:
B
— Micropropagation
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Q. Which process occurs in the chloroplasts of plant cells?
A.
Cellular respiration
B.
Photosynthesis
C.
Nitrogen fixation
D.
Fermentation
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Solution
Photosynthesis occurs in the chloroplasts, where light energy is converted into chemical energy.
Correct Answer:
B
— Photosynthesis
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Q. Which process primarily drives the movement of water in plants?
A.
Diffusion
B.
Osmosis
C.
Active transport
D.
Transpiration
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Solution
Transpiration creates a negative pressure in the leaves, which helps pull water upward through the xylem.
Correct Answer:
D
— Transpiration
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Q. Which process results in the formation of gametes with half the number of chromosomes?
A.
Mitosis
B.
Meiosis
C.
Fertilization
D.
Binary fission
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Solution
Meiosis is the process that reduces the chromosome number by half, producing gametes for sexual reproduction.
Correct Answer:
B
— Meiosis
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Q. Which regulatory body oversees the use of transgenic animals in research in the United States?
A.
FDA
B.
USDA
C.
EPA
D.
NIH
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Solution
The USDA (United States Department of Agriculture) oversees the use of transgenic animals in research, along with other regulatory bodies.
Correct Answer:
B
— USDA
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Q. Which special protein is associated with stress response in plants?
A.
Globulin
B.
Casein
C.
Heat shock protein
D.
Collagen
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Solution
Heat shock proteins are produced in response to stress and help protect plant cells from damage.
Correct Answer:
C
— Heat shock protein
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Q. Which special protein is known for its role in seed germination?
A.
Albumin
B.
Globulin
C.
Lectin
D.
Enzyme inhibitors
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Solution
Albumin proteins play a crucial role in seed germination by providing essential nutrients to the developing plant.
Correct Answer:
A
— Albumin
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Q. Which special protein is often linked to improving flavor in crops?
A.
Enzymes
B.
Storage proteins
C.
Transport proteins
D.
Structural proteins
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Solution
Storage proteins can influence the flavor profile of crops by affecting the accumulation of flavor compounds.
Correct Answer:
B
— Storage proteins
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Q. Which structure in plant cells is responsible for the synthesis of sugars?
A.
Mitochondria
B.
Chloroplasts
C.
Ribosomes
D.
Endoplasmic reticulum
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Solution
Chloroplasts are the organelles where photosynthesis occurs, leading to the synthesis of sugars.
Correct Answer:
B
— Chloroplasts
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Q. Which structure in plants is primarily involved in gas exchange?
A.
Stomata
B.
Cuticle
C.
Phloem
D.
Xylem
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Solution
Stomata are small openings on leaves that facilitate gas exchange.
Correct Answer:
A
— Stomata
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Q. Which substrate is most commonly used for ethanol production in the brewing industry?
A.
Corn
B.
Wheat
C.
Barley
D.
Sugarcane
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Solution
Barley is the most commonly used substrate in the brewing industry for ethanol production, particularly in beer.
Correct Answer:
C
— Barley
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Q. Which sugar is most commonly used in plant tissue culture media?
A.
Glucose
B.
Fructose
C.
Sucrose
D.
Mannitol
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Solution
Sucrose is the most commonly used sugar in plant tissue culture media as it provides energy for the growing cells.
Correct Answer:
C
— Sucrose
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Q. Which technique is commonly used in plant genetic engineering?
A.
CRISPR-Cas9
B.
Polymerase Chain Reaction
C.
Western Blotting
D.
Gel Electrophoresis
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Solution
CRISPR-Cas9 is a widely used technique in plant genetic engineering for precise editing of plant genomes.
Correct Answer:
A
— CRISPR-Cas9
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Q. Which technique is commonly used to create transgenic animals?
A.
Gene therapy
B.
CRISPR-Cas9
C.
Cloning
D.
Artificial insemination
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Solution
CRISPR-Cas9 is a widely used technique for creating transgenic animals by allowing precise editing of the genome.
Correct Answer:
B
— CRISPR-Cas9
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Q. Which technique is often used to purify synthesized therapeutic agents?
A.
Chromatography
B.
Spectroscopy
C.
Electrophoresis
D.
Centrifugation
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Solution
Chromatography is a widely used technique for purifying synthesized therapeutic agents.
Correct Answer:
A
— Chromatography
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Q. Which technology is commonly used in the fabrication of biochips?
A.
3D printing
B.
Photolithography
C.
Laser cutting
D.
Electrospinning
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Solution
Photolithography is a widely used technology for the fabrication of biochips, allowing for precise patterning of biomolecules on a substrate.
Correct Answer:
B
— Photolithography
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Q. Which type of beer is typically lower in calories?
A.
Lager
B.
Stout
C.
Pale Ale
D.
Light beer
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Solution
Light beer is typically lower in calories compared to regular beers.
Correct Answer:
D
— Light beer
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Q. Which type of biosensor is primarily used for detecting pathogens?
A.
Optical biosensor
B.
Electrochemical biosensor
C.
Immunosensor
D.
Thermal biosensor
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Solution
Immunosensors are specifically designed to detect pathogens by utilizing antibodies that bind to the target microorganisms.
Correct Answer:
C
— Immunosensor
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Q. Which type of cloning vector is derived from bacteriophages?
A.
Cosmids
B.
Bacterial artificial chromosomes
C.
Yeast artificial chromosomes
D.
Plasmids
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Solution
Cosmids are a type of cloning vector that is derived from bacteriophages.
Correct Answer:
A
— Cosmids
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Q. Which type of special protein is often used to improve drought resistance in crops?
A.
Antifreeze proteins
B.
Heat shock proteins
C.
Dehydrin proteins
D.
Chaperone proteins
Show solution
Solution
Dehydrin proteins help plants survive under drought conditions by protecting cellular structures.
Correct Answer:
C
— Dehydrin proteins
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