Microbial Culture Maintenance Quiz

How often should the Master Culture be maintained and preserved?

• Annually

• Every 3 months

• Every month

• Every 6 months

What is the recommended frequency for maintaining and preserving the Stock Culture?

• Annually

• Every 3 months

• Every month

• Every 6 months

How often should the Working Culture be maintained and preserved?

• Annually

• Every 3 months

• Every month

• Every 6 months

What is a master culture?

• A secondary culture used for testing

• A primary culture from which working or subcultures are derived

• A culture used only for food production

• A culture that cannot be preserved

Why is a master culture preserved meticulously?

• To increase its size

• To maintain purity and viability

• To change its characteristics

• To make it less reliable

Under what conditions is a master culture stored?

• Room temperature

• -70 degrees Celsius

• 100 degrees Celsius

• 0 degrees Celsius

What does a master culture ensure in microbial strains?

• Variability and inconsistency

• Reproducibility and reliability

• Unpredictability and instability

• Exclusivity and rarity

What is a stock culture derived from?

• A new culture

• The master culture

• A contaminated culture

• A synthetic culture

Under what conditions is a stock culture stored to preserve its characteristics?

• Room temperature in water

• -20 degrees Celsius in tryptic soy broth

• 37 degrees Celsius in agar

• 100 degrees Celsius in saline

What is a working culture typically derived from?

• Stock culture

• Soil samples

• Water samples

• Airborne particles