Bioprocess Technology (CAL)

What is the diameter of baffles in a standard stirred tank bioreactor?

• 1/3 to 1/4 of the tank diameter

• 1/10 to 1/12 of the tank diameter

• 1/25 to 1/30 of the tank diameter

• Any size, as long it is less than half the tank diameter

A reactor has a total volume of 50,000 liters.

It has a headspace volume of 10,000 liters.

What is the volume of liquid in the reactor?

• 10,000 L

• 40,000 L

• 50,000 L

• 60,000 L

Which of the following has the highest surface area available for oxygen transfer?

• A shake flask

• A standing test tube

• A sparged stirred tank reactor agitated at 400 rpm

• A non-sparged stirred tank reactor agitated at 400 rpm

Which of the following is the largest industrial reactor?

• Airlift reactor

• Stirred tank reactor

• Fluidised bed reactor

• Packed bed reactor

What is the type of impeller as shown in the diagram?

• Turbine impeller

• Intermig impeller

• Ekato interprop impeller

• Six-blade disc impeller

What is the type of impeller as shown in the diagram ?

• Kaplan turbine impeller

• Propeller impeller

• Intermig impeller

• Ekato interprop impeller

Which component allows the formation of bubbles as the air goes in?

• 3

• 4

• 5

• 7

Which component allows the heat transfer in/out of the medium inside fermenter?

• 4

• 5

• 6

• 7

Which component allows the sampling for quality control purposes?

• 10

• 13

• 14

• 15

The function of component ‘h’ is to _______.

• filter sterilise the inlet/outlet air

• diminish the size of air bubbles for better aeration

• avoid contamination by blocking the contaminants

• avoid the complete submersion of samples in liquid medium