Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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Important Questions for PUC Karnataka Science Class 12 - Department of Pre-University Education, Karnataka - Biology

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Describe the structure of a nucleosome.

Appears in 4 question papers
Chapter: [2.02] Molecular Basis of Inheritance
Concept: The DNA > Packaging of Dna Helix

Describe how do 'flocs' and 'activated sludge' help in Sewage Treatment.

Appears in 4 question papers
Chapter: [3.03] Microbes in Human Welfare
Concept: Microbes in Sewage Treatment

State the fate of a pair of autosomes during gamete formation.

Appears in 3 question papers
Chapter: [1.01] Reproduction in Organisms
Concept: Sexual Reproduction > Pre-fertilisation Events - Gametogenesis

Our government has intentionally imposed strict conditions for M.T.P. in our country. Justify giving a reason.

Appears in 3 question papers
Chapter: [1.04] Reproductive Health
Concept: Reproductive Health - Problems and Strategies

Our government has intentionally imposed strict conditions for M.T.P. in our country. Justify giving a reason.

Appears in 3 question papers
Chapter: [1.04] Reproductive Health
Concept: Reproductive Health - Problems and Strategies

During a medical investigation, an infant was found to possess an extra  chromosome-21. Describe the symptoms the child is likely to develop later in the life.

Appears in 3 question papers
Chapter: [2.01] Principles of Inheritance and Variation
Concept: Genetic Disorders > Chromosomal Disorders

A number of passengers were severely burnt beyond recognition during a train accident. Name and describe a modern technique that can help hand over the dead to their relatives.

Appears in 3 question papers
Chapter: [2.02] Molecular Basis of Inheritance
Concept: DNA Fingerprinting

Mention the evolutionary significance of the Shrews

Appears in 3 question papers
Chapter: [2.03] Evolution
Concept: Evolution of Life Forms - a Theory

Mention the evolutionary significance of the Lobefins

Appears in 3 question papers
Chapter: [2.03] Evolution
Concept: Evolution of Life Forms - a Theory

Mention the evolutionary significance of the Homo habilis

Appears in 3 question papers
Chapter: [2.03] Evolution
Concept: Evolution of Life Forms - a Theory

p2 + 2pq + q2 = 1. Explain this algebraic equation on the basis of Hardy Weinberg's principle.

Appears in 3 question papers
Chapter: [2.03] Evolution
Concept: Hardy - Weinberg'S Principle

How do the observations made during moth collection in pre- and post- industrialized era in England support evolution by Natural Selection?

Appears in 3 question papers
Chapter: [2.03] Evolution
Concept: Darwin'S Contribution

Explain the phenomenon that is well represented by Darwin's finches other than natural selection.

Appears in 3 question papers
Chapter: [2.03] Evolution
Concept: Darwin'S Contribution

Suggest a method to ensure an anamnestic response in humans.

Appears in 3 question papers
Chapter: [3.01] Human Health and Diseases
Concept: Concept of Immunity

Explain the importance of "selection" during inbreeding in cattle

Appears in 3 question papers
Chapter: [3.02] Strategies for Enhancement in Food Production
Concept: Animal Husbandry

Write the steps you would suggest to be undertaken to obtain a foreign-gene-product.

Appears in 3 question papers
Chapter: [4.01] Biotechnology - Principles and Processes
Concept: Tools of Recombinant Dna Technology > Competent Host (For Transformation with Recombinant Dna)

Explain the role of Restriction endonuclease in Biotechnology

Appears in 3 question papers
Chapter: [4.02] Biotechnology and Its Application
Concept: Introduction of Biotechnology and Its Application

Explain the role of the Gel − electrophoresis in Biotechnology

Appears in 3 question papers
Chapter: [4.02] Biotechnology and Its Application
Concept: Introduction of Biotechnology and Its Application

Explain the role of the Selectable markers in pBR322 in Biotechnology.

Appears in 3 question papers
Chapter: [4.02] Biotechnology and Its Application
Concept: Introduction of Biotechnology and Its Application

Why do lepidopterans die when they feed on Bt cotton plant? Explain how does it happen.

Appears in 3 question papers
Chapter: [4.02] Biotechnology and Its Application
Concept: Biotechnological Applications in Agriculture
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