Science (English Medium) कक्षा १२ - CBSE Question Bank Solutions for Biology

Match the following list of bioactive substances and their roles:

Choose the correct match:

Which one of the following alcoholic drinks is produced without distillation?

What are fermentors?

Name a microbe used for statin production.

How has the discovery of antibiotics helped mankind in the field of medicine?

Why is distillation required for producing certain alcoholic drinks?

Write the most important characteristic that Aspergillus niger, Clostridium butylicum, and Lactobacillus share.

Give any two microbes that are useful in biotechnology.

Name any two industrially important enzymes.

Name an immune immunosupressive agent?

How was penicillin discovered?

Name the scientists who were credited for showing the role of Penicillin as an antibiotic?

How do bioactive molecules of fungal origin help in restoring good health of humans?

What roles do enzymes play in detergents that we use for washing clothes? Are these enzymes produced from some unique microorganisms?

What is a broad spectrum antibiotic? Name one such antibiotic.

Which bacterium has been used as a clot buster? What is its mode of action?

Which of the following enzymes catalyse the removal of nucleotides from the ends of DNA?

Which of the given statements is correct in the context of visualizing DNA molecules separated by agarose gel electrophoresis?

'Restriction' in Restriction enzyme refers to ______.

In agarose gel electrophoresis, DNA molecules are separated on the basis of their ______.