HSC Science इयत्ता १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions

Define the following term

Zymology

Define the following terms

Superbug

When does antibiotic resistance develop?

What is referred to as industrial alcohol? Briefly describe its preparation.

Gene therapy is an attempt to correct a Genetic defect by providing a normal gene into the individual. By this the function can be restored. An alternate method would be to provide gene product known as enzyme replacement therapy, which would also restore the function. Which in your opinion is a better option? Give reasons for your answer.

Differentiate between Somatic cell gene therapy and germline gene therapy.

One of the applications of biotechnology is ‘gene therapy” to treat a person born with a hereditary disease.

i) What does “gene therapy” mean?

ii) Name the hereditary disease for which the first clinical gene therapy was used.

iii) Mention the steps involved in gene therapy to treat this disease.

Write short notes on the following:

Microbial fuel cells

Which of the following is an r-species

What is a Habitat?

Define ecological niche.

Differentiate foeticide and infanticide.

Mangolism is a genetic disorder which is caused by the presence of an extra chromosome number ____________.

Give an account of the genetic control of the Rh factor. 

What are stem cells? Explain its role in the field of medicine.

Which of the following is considered a hotspots of biodiversity in India.

Define endemism.

How many hotspots are there in India? Name them.

Excess of fluoride in drinking water causes:

Write notes on the following:

Algal Bloom