In the VBNC state, which statement is true?

• A. Cells are alive and form colonies
• B. Cells are alive but do not form colonies and may escape detection
• C. Cells rapidly divide
• D. Cells become spores

Answer: (B)

In this concept, some bacteria can stay alive but stop forming colonies on standard culture plates. That’s what viability without culturability means: the cells remain alive and often metabolically active to some degree, but they don’t grow into colonies under normal laboratory conditions, so they can go undetected. They can sometimes be revived when conditions improve, returning to a state where they can form colonies again. So the statement that best fits is that cells are alive but do not form colonies and may escape detection. The other ideas describe active growth, rapid division, or a different survival strategy (spore formation), which aren’t characteristic of the VBNC state.