Biotechnology Quiz_Lecture 2

What are the advantages of using microorganisms in biotechnology?

• Slow growth compared to plants and animals

• Ease of mass cultivation

• Dependence on seasons and climate

• Simple nutritional requirements

What are the sources of industrial microorganisms used in biotechnology?

• Isolation from the environment

• Culture collections

The advantage of using microorganisms selected from a culture collection is saving cost and time.

• True

• False

What is strain improvement in the context of industrial microorganisms?

• Increasing the yield of the product

• Improving the properties of the microorganism

What are the approaches used for strain improvement?

• Mutation and selection

• Genetic recombination

• Recombinant DNA technology

• All these methods can be used

What are the advantages of preservation on agar with ordinary refrigeration?

• Cheap and simple, needs no special equipment

• Suitable for long-term preservation

• Reduces the possibility of mutations

• Allows for easy transportation

What are the disadvantages of preservation by freezing at (-20 to -80 ºC)?

• Requires a cryoprotective agent

• Simple and requires a minimum of equipment

• Not suitable for long-term preservation

• High cost and difficulty of shipment

What are the advantages of lyophilization?

• Suitable for long-term preservation of microbial cultures

• Easy to transport freeze-dried ampoules

• Requires no further attention once dried

• All of the above

Full-form of ATCC is _________

• a) American Type Culture Collection

• b) Automatic Type Counter & Classifier

• c) American Type Counter Collection

• d) American Type Classifier and Collection

The shotgun approach is the isolation and detection of microorganisms of interest.

• a) True

• b) False