Q20 of 27 Page 1

(a) Match the microbes listed under Column-A with the products mentioned underColumn-B.

Column – A Column – B


(H) Penicillium notatum (i) Statin


(I) Trichoderma polysporum (ii) ethanol


(J) Monascuspurpurea (iii) antibiotic


(K) Saccharomyces cerevisiae (iv) Cyclosporin-A


(b) Why does ‘Swiss Cheese’ develop large holes ?


(a)


H – iii, because Penicillium notatum is an antibiotic


I – iv, because Cyclosporine A is widely produced by submerged fermentation of aerobic fungi identified as Trichoderma polysporum.


J – i, cholesterol lowering statins are produced by the molds Monascuspurpurea


K – ii, Saccharomyces cerevisiae is widely used in ethanol production.


(b) Swiss cheese develops large holes because the bacteria Propionibacterium shermanii which helps in its formation release a large amount of carbon dioxide which cause large holes.


More from this chapter

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18

Name the group of bacteria involved in setting milk into curd. Explain the process they carry in doing so. Write another beneficial role of such bacteria.

 19

Bee keeping practice is a good income generating industry. Write the different points to be kept in mind for successful bee keeping. Write the scientific name of the most common Indian species used for the purpose.

 21

Describe the formation of recombinant DNA by the action of EcoRI.

OR


Describe the process of amplification of “gene of interest” using PCR technique.


 22

Two children, A and B aged 4 and 5 years respectively visited a hospital with a similar genetic disorder. The girl A was provided enzyme-replacement therapy and was advised to revisit periodically for further treatment. The girl, B was, however, given atherapy that did not require revisit for further treatment.

(a) Name the ailments the two girls were suffering from?


(b) Why did the treatment provided to girl A required repeated visits?


(c) How was the girl B cured permanently?