Which of the following plays an important role in the process of fermentation?

  • A
    Protozoa
  • B
    Microorganisms
  • C
    Multinucleated organisms
  • D
    All of the above $(A), (B)$ and $(C)$

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Match the Column-$I$ and Column-$II$.
Column-$I$Column-$II$
$1$. Aspergillus niger$(A)$ Acetic acid
$2$. Acetobacter aceti$(B)$ Butyric acid
$3$. Clostridium butyricum$(C)$ Citric acid
$4$. Lactobacillus$(D)$ Lactic acid

The large holes in Swiss cheese are due to the production of a large amount of $A$ by a bacterium $B$. Here $A$ and $B$ refer to:

Rennet is used for:

The antibiotic flavicin is obtained from:

Name any two industrially important enzymes.

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