Industrially Useful Microbial Processes – Section 2

31. Which of the following are commercially used for bacterial amylases production?

A. Bacillus subtilis
B. Bacillus diastaticus
C. Clostridium acetobutylicum
D. Both (a) and (b)

Correct Answer: D. Both (a) and (b)

32. An “International Unit” of penicillin activity established in 1944 is the amount of penicillin equivalent to

A. 0.6 micrograms of crystalline penicillin G of about 98% purity
B. 0.6 micrograms of crystalline penicillin F of about 98% purity
C. 0.8 micrograms of crystalline penicillin G of about 98% purity
D. 0.8 micrograms of crystalline penicillin G of about 90% purity

Correct Answer: A. 0.6 micrograms of crystalline penicillin G of about 98% purity

33. The man who first discovered the chemical that causes souring of milk was

A. Pasteur
B. Scheele
C. Watson
D. Ronald Ross

Correct Answer: B. Scheele

34. Which of the following is not penicillin?

A. Penicillin G
B. Penicillin X
C. Penicillin V
D. Penicillin Y

Correct Answer: D. Penicillin Y

35. Which of the following is a cephalosporin?

A. Cephalosporin N
B. Synnematin
C. Cephalosporin C
D.  All of these

Correct Answer: D. All of these

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