Biology (School & UG)

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Q. What is the purpose of marker-assisted selection in plant breeding?
  • A. To identify plants with desirable traits
  • B. To increase genetic diversity
  • C. To enhance photosynthetic efficiency
  • D. To reduce water requirements
Q. What is the purpose of using biopesticides in plant biotechnology?
  • A. To enhance plant growth
  • B. To control pest populations
  • C. To improve seed germination
  • D. To increase photosynthetic efficiency
Q. What is the purpose of using marker-assisted selection in plant breeding?
  • A. To identify and select plants with desirable traits
  • B. To enhance photosynthetic efficiency
  • C. To increase seed size
  • D. To improve soil fertility
Q. What is the purpose of using restriction enzymes in molecular biology?
  • A. To amplify DNA
  • B. To cut DNA at specific sequences
  • C. To synthesize RNA
  • D. To visualize proteins
Q. What is the purpose of using restriction enzymes in recombinant DNA technology?
  • A. To amplify DNA
  • B. To cut DNA at specific sequences
  • C. To synthesize RNA
  • D. To clone entire genomes
Q. What is the purpose of using reverse transcriptase in molecular biology?
  • A. To synthesize DNA from RNA
  • B. To amplify DNA
  • C. To cut DNA at specific sites
  • D. To clone DNA
Q. What is the recommended contact time for a 10% bleach solution to effectively disinfect surfaces?
  • A. 1 minute
  • B. 5 minutes
  • C. 10 minutes
  • D. 15 minutes
Q. What is the relationship between photosynthesis and respiration in plants?
  • A. They are the same process
  • B. Photosynthesis produces oxygen for respiration
  • C. Respiration produces glucose for photosynthesis
  • D. They occur in different organisms
Q. What is the role of a biological indicator in sterilization processes?
  • A. To measure temperature
  • B. To confirm the presence of microorganisms
  • C. To verify the effectiveness of sterilization
  • D. To disinfect surfaces
Q. What is the role of a biological indicator in sterilization?
  • A. To measure temperature
  • B. To confirm the presence of microorganisms
  • C. To verify the effectiveness of the sterilization process
  • D. To indicate the type of sterilization method used
Q. What is the role of a vector in recombinant DNA technology?
  • A. To amplify RNA
  • B. To carry foreign DNA into a host cell
  • C. To cut DNA at specific sites
  • D. To synthesize proteins
Q. What is the role of abscisic acid in plants?
  • A. Promotes seed germination
  • B. Inhibits growth during stress
  • C. Stimulates flowering
  • D. Enhances fruit ripening
Q. What is the role of actinobacteria in soil health?
  • A. They cause plant diseases
  • B. They decompose organic matter
  • C. They fix carbon dioxide
  • D. They produce antibiotics
Q. What is the role of Agrobacterium tumefaciens in plant biotechnology?
  • A. It enhances photosynthesis
  • B. It acts as a vector for gene transfer
  • C. It improves root growth
  • D. It increases resistance to pests
Q. What is the role of alcohol in disinfection?
  • A. To kill spores
  • B. To denature proteins and disrupt membranes
  • C. To oxidize cellular components
  • D. To inhibit nucleic acid synthesis
Q. What is the role of alkaloids in plants?
  • A. Photosynthesis
  • B. Defense against herbivores
  • C. Water storage
  • D. Nutrient absorption
Q. What is the role of amniotic fluid during pregnancy?
  • A. To provide nutrients to the fetus
  • B. To cushion the fetus and allow for movement
  • C. To facilitate gas exchange
  • D. To regulate maternal blood pressure
Q. What is the role of amniotic fluid?
  • A. To provide nutrients to the fetus
  • B. To cushion the fetus and allow for movement
  • C. To facilitate gas exchange
  • D. To produce hormones
Q. What is the role of antibodies in the immune response?
  • A. Directly kill pathogens
  • B. Neutralize toxins and pathogens
  • C. Activate complement system
  • D. All of the above
Q. What is the role of antibodies in the immune system?
  • A. To directly kill pathogens
  • B. To neutralize toxins
  • C. To enhance phagocytosis
  • D. All of the above
Q. What is the role of antigen-presenting cells (APCs) in the immune response?
  • A. To produce antibodies
  • B. To present antigens to T cells
  • C. To directly kill pathogens
  • D. To secrete cytokines
Q. What is the role of ATP and NADPH in the Calvin cycle?
  • A. Energy and reducing power
  • B. Oxygen production
  • C. Carbon fixation
  • D. Light absorption
Q. What is the role of ATP and NADPH produced in the light reactions?
  • A. To provide energy and reducing power for the Calvin cycle
  • B. To produce glucose directly
  • C. To transport water
  • D. To release oxygen
Q. What is the role of ATP in the light-independent reactions?
  • A. Energy source
  • B. Electron carrier
  • C. Carbon source
  • D. None of the above
Q. What is the role of ATP synthase in photosynthesis?
  • A. To absorb light
  • B. To fix carbon
  • C. To synthesize ATP
  • D. To transport electrons
Q. What is the role of autoclaving in sterilization?
  • A. It uses chemical agents to kill microorganisms.
  • B. It uses high pressure and steam to achieve sterilization.
  • C. It relies on ultraviolet light to disinfect surfaces.
  • D. It is a method of physical disinfection only.
Q. What is the role of auxins in apical dominance?
  • A. Promote lateral bud growth
  • B. Inhibit lateral bud growth
  • C. Stimulate root growth
  • D. Enhance leaf growth
Q. What is the role of bile in digestion?
  • A. Breaks down carbohydrates
  • B. Emulsifies fats
  • C. Digests proteins
  • D. Absorbs nutrients
Q. What is the role of chlorophyll in photosynthesis?
  • A. To absorb water
  • B. To capture light energy
  • C. To synthesize glucose
  • D. To release oxygen
Q. What is the role of chlorophyll in plants?
  • A. Water absorption
  • B. Nutrient transport
  • C. Light absorption for photosynthesis
  • D. Root growth
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