Lactic Acid Bacteria & Their Applications

Correct answer: C — A-I, B-V, C-IV, D-II, E-III

The core concept tested is the specific applications of various microbes and their products in household and industrial settings. Let's match each item: A. *Saccharomyces cerevisiae*: Commonly called brewer's yeast, it is used for fermenting malted cereals and fruit juices to produce ethanol. (Matches I) B. Lipases: These enzymes are used in detergent formulations to remove oily stains from laundry. (Matches V) C. *Lactobacillus*: This bacterium, along with others known as Lactic Acid Bacteria (LAB), converts milk into curd. (Matches IV) D. Pectinases and Proteases: These enzymes are used to clarify bottled fruit juices. (Matches II) E. *Propionibacterium sharmanii*: This bacterium is responsible for the large holes in Swiss cheese due due to large CO₂ production. (Matches III) Therefore, the correct match is A-I, B-V, C-IV, D-II, E-III.