Which of the following yields citric acid?
1.  Penicillium citrinum
2. Aspergillus niger
3. Saccharomyces
4.  Azospirillium

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
 96%
Level 1: 80%+
AIPMT - 1998
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For retting of Jute, the fermenting microbe used is:

1. Methophilic bacteria

2. Helicobacter pylori

3. Butyric acid bacteria

4. Streptococcus lactin 

Subtopic:  Chemicals, Enzymes & Other Bioactive Molecules |
Level 3: 35%-60%
AIPMT - 2005
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