Which acronym lists the factors that affect microbial growth?

• A. FATTOM
• B. SPOILR
• C. GROWTH
• D. HACCP

Answer: (A)

The main concept here is understanding what conditions influence whether microbes can grow in food. Microbes need six key factors to multiply: Food provides the nutrients, Acidity (pH) affects their metabolic processes, Time and Temperature together determine how long and how fast they can grow, Oxygen supports many microorganisms, and Moisture (water activity) is required for their reactions. If these factors are favorable, microbes can proliferate; if any one is restricted—by cooling the food, increasing acidity, drying it, reducing available oxygen, or cutting the time foods spend at supportive temperatures—growth is hindered or halted. The acronym that lists these six factors is FATTOM, making it the best choice. Other options aren’t standard mnemonics for growth factors (HACCP is a broader food-safety system, while the others are not recognized as the set of growth determinants).