Bacterial Cultures - iGEM Thessaloniki

The most common sterilization method used in microbiology for heat resistant media is:

• dry heat

• moist heat

• filtering

Ionizing Radiation has greater bactericidal power than non-ionizing radiation, because it has a longer wavelength.

• True

• False

The pore size of the sterilization filters should be such as to prevent the passage of:

• all viruses

• all microbial cells

• both

An adequate temperature for killing all microorganisms and their spores when the pressure is at 15 psi for 20 minutes is:

• 100°C

• 120°C

• 160°C

An ideal agent would be expected to kill all microorganisms at the highest possible concentration with the least harmful effects on animals and man

• True

• False

Which bacterial culture is used to study the sensitivity of bacteria to antibiotics?

• Steak culture

• Lawn culture

• Stroke culture

• Stab culture

Which bacterial culture is used to produce bacterial cells’ secondary metabolites?

• Steak culture

• Stroke culture

• Liquid culture

• Anaerobic microbial cell culture

In which bacterial culture does we observe colonies grow in and on solidified medium?

• Pour plate culture

• Spread plate culture

• Steak culture

• Lawn culture

Which of the following is NOT essential for a bacterial growth medium ?

• salts

• water

• sugars

• agar

Blood agar is an s a selective nutrient medium

• True

• False