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

Describe the structure of a nucleosome.

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

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

Suggest a method to ensure an anamnestic response in humans.

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.

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.

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

What is an age-pyramid?

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.

Explain the importance of "selection" during inbreeding in cattle

Explain the role of Restriction endonuclease in Biotechnology

Explain the role of the Gel − electrophoresis in Biotechnology

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

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

Discuss the role of healthy ecosystem services as a pre-requisite for a wide range of economic, environmental and aesthetic goods and services

Mention the evolutionary significance of the Shrews

Mention the evolutionary significance of the Lobefins

Mention the evolutionary significance of the Homo habilis

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

'in-situ' Conservation can help endangered/threatened species. Justify the statement.