SarkariPYQ

SSC Selection Post 2024 PYQ — Question 37

SSC Selection Post - Higher Secondary Level - 20 Jun 2024 - Shift 2 • General Awareness • Q37

Back to paper

Which of the following bacteria grow in milk and convert it to curd?

Show answer & explanation

Correct answer: C

Explanation

The correct answer is Option 3 i.e. Lactic acid bacteria

  • Lactic Acid Bacteria (LAB) grow in warm milk and convert lactose (milk sugar) into lactic acid, forming curd.

  • The main species involved is Lactobacillus, especially Lactobacillus bulgaricus.

  • The acid produced causes milk proteins (casein) to coagulate, giving curd its texture and sour taste.

  • LAB also improve digestibility and add vitamins like B12.

  • LAB are used in making yogurt, cheese, and other fermented dairy products.