Question

……… helps bacteria to grow by providing nitrogenous compounds, carbon, B-complex vitamins and other growth factors for microorganisms.

• A. Agar
• B. Yeast extract
• C. Peptone
• D. Agar–Agar

Hint:

Yeast extract = microbial multivitamin → supports robust bacterial growth.

Answer 1

The Correct Option is B

Yeast extract is a rich source of nitrogenous compounds, carbon, vitamins (especially B-complex), and growth factors essential for microbial growth. It is commonly used in culture media to support the proliferation of a wide variety of bacteria and fungi.