Answers and bookmarks are saved in this browser, across visits. They do not sync to your account.
535 questions in this collection · Page 16 of 54
Question 151 of 535
📘 CLASS XII
Biotechnology Principles And Processes
If we link an alien piece of DNA with bacteriophage or plasmid DNA, we can multiply its numbers equal to the _________ of the vector.
The alien DNA will multiply its numbers equal to the copy number of the vector.
Question 152 of 535
📘 CLASS XII
Biotechnology Principles And Processes
If foreign DNA is ligated at the BamH I site of the tetracycline resistance gene in pBR322, the transformants growing on ampicillin containing medium are then transferred to a medium containing _________ to select recombinants.
The second plating step uses tetracycline to check for inactivation.
Question 153 of 535
📘 CLASS XII
Biotechnology Principles And Processes
Retroviruses have been disarmed and are now used to deliver desirable genes into _________ cells.
Retroviruses are used to deliver desirable genes into animal cells.
Question 154 of 535
📘 CLASS XII
Biotechnology Principles And Processes
Incubating competent cells with recombinant DNA on ice, followed by brief exposure to 42°C (heat shock), and then putting them back on ice, enables the bacteria to take up the _________.
This procedure enables the bacteria to take up the recombinant DNA.
Question 155 of 535
📘 CLASS XII
Biotechnology Principles And Processes
In PCR, the steps in each cycle are (i) Denaturation, (ii) Primer annealing, and (iii) _________ of primers.
The three steps are Denaturation, Primer annealing, and Extension of primers.
Question 156 of 535
📘 CLASS XII
Biotechnology Principles And Processes
The primary purpose of using a continuous culture system is that this method produces a larger biomass leading to _________ yields of desired protein.
Continuous culturing produces a larger biomass leading to higher yields.
Question 157 of 535
📘 CLASS XII
Biotechnology Principles And Processes
The stirred-tank bioreactor has an agitator system, an oxygen delivery system, a foam control system, a temperature control system, a pH control system, and _________.
The bioreactor includes sampling ports for periodic culture withdrawal.
Question 158 of 535
📘 CLASS XII
Biotechnology Principles And Processes
Bioreactors can be thought of as vessels in which raw materials are biologically converted into specific products using microbial plant, animal or _________ cells.
Bioreactors use microbial, plant, animal or human cells.
Question 159 of 535
📘 CLASS XII
Biotechnology Principles And Processes
The process of downstream processing involves separation and purification, followed by formulation with suitable preservatives, and thorough clinical trials, which is necessary for products like _________.
Clinical trials are required as in the case of drugs.
Question 160 of 535
📘 CLASS XII
Biotechnology Principles And Processes
The techniques of genetic engineering overcome the limitation of traditional hybridization procedures by allowing the introduction of only a set of desirable genes, contrasting with the tendency of traditional methods to lead to multiplication of _________ genes.
Traditional methods multiply undesirable genes along with desired ones, a limitation overcome by genetic engineering.