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Biotechnology Principles and Processes MCQs
Class XII Biology
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NCERT Based
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NEET Practice
📘 Concept Based
📝 Exam Level
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535 questions in this chapter
Question 321 of 535
📘 CLASS XII
In downstream processing, which critical step is required for formulations intended as drugs?
Formulations intended as drugs must undergo thorough clinical trials.
Question 322 of 535
📘 CLASS XII
Asexual reproduction differs fundamentally from sexual reproduction in that it primarily:
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation.
Question 323 of 535
📘 CLASS XII
To maintain the cells in the active log/exponential phase during continuous culture, what is done with the medium?
The used medium is drained out from one side while fresh medium is added from the other to maintain the cells in their active phase.
Question 324 of 535
📘 CLASS XII
A plasmid used as a cloning vector is characterized as a circular autonomously replicating:
A plasmid is an autonomously replicating circular extra-chromosomal DNA.
Question 325 of 535
📘 CLASS XII
Synthesising a gene, developing a DNA vaccine, or correcting a defective gene are all examples included under the scope of:
These specialized techniques are included under biotechnology.
Question 326 of 535
📘 CLASS XII
For the multiplication of any alien piece of DNA in an organism, it needs to be linked with which specific vector sequence?
Alien DNA needs to be linked with the origin of replication to replicate and multiply itself in the host.
Question 327 of 535
📘 CLASS XII
In the selection based on $\beta$-galactosidase insertion, colonies that do not produce any colour are identified as:
Colourless colonies result from insertional inactivation, identifying them as recombinant colonies.
Question 328 of 535
📘 CLASS XII
The separation of DNA fragments in gel electrophoresis is achieved due to the sieving effect provided by the:
The DNA fragments separate (resolve) according to their size through sieving effect provided by the agarose gel.
Question 329 of 535
📘 CLASS XII
The first part of the modern definition of biotechnology encompasses the integration of natural science and organisms, cells, parts thereof, and:
The EFB definition mentions 'molecular analogues for products and services'.
Question 330 of 535
📘 CLASS XII
What macromolecules, besides RNA and proteins, must be removed to isolate DNA in a pure form?
To release DNA, the cell must be broken open to release DNA along with RNA, proteins, polysaccharides and also lipids.
