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questions
List of practice Questions
What is contact inhibition? Explain how the normal cell transforms into cancerous cell.
UP Board XII - 2023
UP Board XII
Biology
Human health and disease
Explain Stirred-tank Reactor.
UP Board XII - 2023
UP Board XII
Biology
Biotechnology
Explain Logistic Growth with equation.
UP Board XII - 2023
UP Board XII
Biology
Organisms and Populations
Draw the schematic chart representation of Oogenesis.
UP Board XII - 2023
UP Board XII
Biology
Human Reproduction
Write short notes on Active Immunity and Vaccination.
UP Board XII - 2023
UP Board XII
Biology
Human health and disease
Mention any three vectorless methods that are used to introduce recombinant DNA into competent host cell.
UP Board XII - 2023
UP Board XII
Biology
Biotechnology
Explain how distribution of animals and plants is affected by light, with examples.
UP Board XII - 2023
UP Board XII
Biology
Organisms and Populations
A colourblind father has a daughter with normal vision and the daughter marries a man with normal vision. What is the probability of her son being a carrier for colourblindness? Explain with pedigree chart.
UP Board XII - 2023
UP Board XII
Biology
Principles of Inheritance and Variation
Write the names of any two cyanobacteria responsible for nitrogen fixation.
UP Board XII - 2023
UP Board XII
Biology
Microbes in human welfare
Which type of cross is used to determine the genotype of tall pea plant? Explain.
UP Board XII - 2023
UP Board XII
Biology
Principles of Inheritance and Variation
Explain Co-extinctions.
UP Board XII - 2023
UP Board XII
Biology
Biodiversity and Conservation
Draw only the structure of antibody molecule.
UP Board XII - 2023
UP Board XII
Biology
Biomolecules
In
lac
operon, 'Z' and 'Y' genes code for which enzymes? Also mention their functions.
UP Board XII - 2023
UP Board XII
Biology
Molecular Basis of Inheritance
Comment on Organic Farming.
UP Board XII - 2023
UP Board XII
Biology
Environmental Issues
What is the difference between false fruit and true fruit? Under which category does the apple fall and why?
UP Board XII - 2023
UP Board XII
Biology
Morphology of flowering plants
Why did Mendel select pea plants for his experiments?
UP Board XII - 2023
UP Board XII
Biology
Principles of Inheritance and Variation
Sickle cell anemia is caused by substitution of Glutamic Acid by which amino acid?
UP Board XII - 2023
UP Board XII
Biology
Molecular Basis of Inheritance
How many peptide bonds does each antibody molecule have?
UP Board XII - 2023
UP Board XII
Biology
Biomolecules
Which of the following condition is not maintained in a Bioreactor for optimum growth condition?
UP Board XII - 2023
UP Board XII
Biology
Biotechnology
Oxalis and Commelina produce which two types of flowers? Name them.
UP Board XII - 2023
UP Board XII
Biology
sexual reproduction in flowering plants
Which bacterium did Frederick Griffith use for his research? Also mention the name of the disease caused by that bacterium.
UP Board XII - 2023
UP Board XII
Biology
Molecular Basis of Inheritance
Which part of female reproductive system is responsible for the collection of ovum after ovulation?
UP Board XII - 2023
UP Board XII
Biology
The Female Reproductive System
Write any two reasons why Mendel's theory of inheritance remained unrecognised till 1900.
UP Board XII - 2023
UP Board XII
Biology
Principles of Inheritance and Variation
Which of the following is not a characteristic of pollination by wind?
UP Board XII - 2023
UP Board XII
Biology
sexual reproduction in flowering plants
Write short notes on the following:
(i) Biodiversity hotspot
(ii) Biopiracy
UP Board XII - 2023
UP Board XII
Biology
Biodiversity and Conservation
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