What does continuous culture mean?

1. Where DNA and protein getting expressed continuously

2. Where used medium is drained out and the fresh medium is added from another side

3. Where cells are producing protein for one week continuously

4. Where the production of recombinant DNA is continuing without interference.

Continuous culture has

1.      Cells in their physically active phase

2.      Lag phase

3.      Both A and B

4.     Exponential phase

Continuous culture leads to

1. Smaller biomass

2. Higher yields of desired proteins

3. Both 1 and 2

4. Higher yields of recombinant DNA

The volume of bioreactors cannot be

Bioreactors don't provide which of the conditions?

1. Salts

2. Vitamins

3. Cells

4. Oxygen

The most commonly used bioreactors are

1. Stirring type

2. Sparged type

3. Aerobic type

4. Both 2 and 3

The cylindrical body or curved base of a bioreactor actually facilitates

1. The handling and maintenance of bioreactor

2. mixing

3. better oxygen transport

4. more accumulation of product

Increased surface area for oxygen transfer is a feature found specifically in

1.      Simple stirred tank bioreactor

2.      Sparged stirred-tank bioreactor

3.      All stirred tank bioreactors

4.     All bioreactors have this property

Downstream processing includes

1.      Separation

2.      Purification

3.      Both 1 and 2

4.     Quality control Testing

The Downstream processing occurs after

1.      Biosynthetic phase

2.      Separation phase

3.      Purification phase

4.     All of these