Microbes in Hum...

A farmer adds Azotobacter culture to soil before sowing maize. Which mineral element will be replenished by doing so?

Which of the following statements regarding antibiotics is not correct?
(i) Antibiotics are the attenuated microorganisms which in small concentration can kill or retard the growth of other harmful microorganisms.
(ii) Penicillin was the first antibiotic discovered by Alexander Fleming (1928) while working on bacterium Staphylococcus aureus.
(iii) The full potential of penicillin as an effective antibiotic was established by Ernest Chain and Howard Florey.
(iv) Fleming, Chain and Florey were awarded the Nobel Prize in 1945. 

Select the mismatched pair

Bt toxin genes have been expressed in plants in order to provide resistance against
(i) Lepidopterans and fungi
(ii) Animals and bacteria
(iii) Bacteria and fungi
(iv) Coleopterance and dipterans
(v) Lepidopterans

What causes the inactive form of Bt toxin i.e. protoxin to get converted into its active form in the body of an insect?

The primary treatment of removal of:

Which one of the following is not used as biofertiliser?

Bt toxin kills insect by

Microbe used for biocontrol of pest butterfly caterpillars is 

Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein