Which of the following microbes are related to household products?
A. Lactobacillus
B. Saccharomyces cerevisiae
C. Propionibacterium sharmanii
D. Penicillium notatum
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A, B and C only
A. Lactobacillus — Correct. It turns milk into curd. It produces acids that thicken and partly digest the milk proteins.
B. Saccharomyces cerevisiae — Correct. This is baker’s yeast. It ferments the dough used for making bread.
C. Propionibacterium sharmanii — Correct. It produces a large amount of CO2. This gas makes the large holes in Swiss cheese.
D. Penicillium notatum — Incorrect. It is the source of penicillin, an antibiotic. Antibiotics are industrial products, not household products.