The ultimate aim of maximum recombinant DNA technologies is

1. To multiply DNA

2. To express DNA

3. To multiply mRNA

4. To express protein

Which of the following processes is not associated with protein produced by recombinant DNA?

A.      Restriction Digestion

B.      Expression

C.      Optimization

D.     Purification

What does continuous culture mean?

A.      Where DNA and protein getting expressed continuously

B.      Where used medium is drained out and fresh medium is  added from other side

C.      Where cells are producing protein for one week continuously

D.     Where production of recombinant DNA is continuing without interference.

Continuous culture leads to

1. Smaller biomass

2. Higher yields of desired proteins

3. Both A and B

4. Higher yields of recombinant DNA

The cylindrical body or curved base of a bioreactor actually facilitates

1. The handling and maintenance of bioreactor

2. The mixing of the reactor content
3. Better oxygen transport
4. More accumulation of product

The Agitation system of bioreactor has

1. Flat bladed impeller

2. Sharp impellers

3. Foam breaker

4. Steamer

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

Quality control testing is not

A.      A part of downstream processing

B.      Include separation and purification

C.      Both A and B

D.     Vary from product to product

The formulation with suitable preservatives in the case of drugs has to undergo
 1. Thorough clinical trials
 2. Thorough strict separation techniques
 3. Thorough harsh heat shock control
 4. Thorough long restriction digestion

A molecular technique in which DNA sequences between two oligonucleotide primers can be amplified is known as

1. southern blotting
2. northern blotting
3. polymerase chain reaction
4. DNA replication