Which of the following microorganism is used for production of citric acid in industries?

(a)

Lactobacillus bulgaris

(b)

Penicillium citrinum

(c)

Aspergillus niger

(d)

Rhizopus nigricans

Which of the following is not involved in nitrogen fixation?

(a)

Pseudomonas

(b)

Azotobacter

(c)

Anabaena

(d)

Nostac

The purpose of biological treatment of waste water is to _______

(a)

Reduce BOD

(b)

Increase BOD

(c)

Reduce sedimentation

(d)

Increase sedimentation

The enzyme________is got from Aspergillus.

(a)

Rennet

(b)

Zymase

(c)

Amylase

(d)

Lipase

Lactobacillus helps to produce________

(a)

Citric acid

(b)

Milk

(c)

Acetic acid

(d)

Butyric acid

_________is used for recycling of PET plastics

(a)

Dechloromonas aromatica

(b)

Phanerochaete chrysosporium

(c)

Ideonella sakaiensis

(d)

Nitrosomonas

Plants used for bio-diesel production________

(a)

Anabaena

(b)

Jatropha

(c)

Pongamia

(d)

b and c

During sewage treatment, biogas are produced which includes

(a)

Methane, hydrogen sulphide, carbon dioxide

(b)

Methane, oxygen, hydrogen sulphide

(c)

Hydrogen sulphide, methane, sulphur dioxide

(d)

Hydrogen sulphide, nitrogen, methane

Match, the following list of microbes and their importance:

a) Saccharomyces cerevisiae	(i) Production of immunosuppressive agents
b) Monasus purpureus	(ii) Ripening of Swiss cheese
c) Trichoderma polysporum	(iii) Commercial production of ethonol
d) ropionibacterium shermanii	(iv) Production of blood - cholesterol lowering agents.

(a)

(iv)  (iii)  (ii)  (i)

(b)

(iv)  (ii)  (i)  (iii)

(c)

(iii)  (i)  (iv)  (ii)

(d)

(iii)  (iv)  (i)  (ii)

Name the person who was the first to use the term antibiotic

(a)

Selman Waksman

(b)

Alexander Flemming

(c)

Earnest Chain

(d)

Howard Florey