Class XII · Biology practice

Biotechnology Principles and Processes MCQs

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535 questions in this collection · Page 26 of 54

Question 251 of 535

📘 CLASS XII

Biotechnology Principles And Processes

RNA can be removed from the DNA preparation by treatment with the enzyme:

The RNA can be removed by treatment with ribonuclease.

Question 252 of 535

📘 CLASS XII

Biotechnology Principles And Processes

Proteins can be removed from the DNA preparation by treatment with the enzyme:

Proteins can be removed by treatment with protease.

Question 253 of 535

📘 CLASS XII

Biotechnology Principles And Processes

Purified DNA ultimately precipitates out of the suspension after the addition of chilled:

Purified DNA ultimately precipitates out after the addition of chilled ethanol.

Question 254 of 535

📘 CLASS XII

Biotechnology Principles And Processes

The technique used to remove the precipitated DNA, visible as fine threads in suspension, is known as:

The precipitated DNA can be removed by spooling.

Question 255 of 535

📘 CLASS XII

Biotechnology Principles And Processes

Agarose gel electrophoresis is employed to check the progression of which key RDT step?

Agarose gel electrophoresis is employed to check the progression of a restriction enzyme digestion.

Question 256 of 535

📘 CLASS XII

Biotechnology Principles And Processes

After cutting the source DNA and vector DNA, which enzyme is added to mix the cut components and prepare recombinant DNA?

Ligase is added to join the cut source DNA and the cut vector, resulting in the preparation of recombinant DNA.

Question 257 of 535

📘 CLASS XII

Biotechnology Principles And Processes

What is the full form of PCR?

PCR stands for Polymerase Chain Reaction.

Question 258 of 535

📘 CLASS XII

Biotechnology Principles And Processes

Multiple copies of the gene of interest are synthesized *in vitro* during PCR using two sets of primers and the enzyme:

DNA polymerase is the enzyme used in PCR.

Question 259 of 535

📘 CLASS XII

Biotechnology Principles And Processes

The segment of DNA can be amplified to approximately how many copies if the replication process in PCR is repeated many times?

The segment of DNA can be amplified to approximately billion times, i.e., 1 billion copies are made.

Question 260 of 535

📘 CLASS XII

Biotechnology Principles And Processes

The thermostable DNA polymerase used in PCR is isolated from the bacterium:

The thermostable DNA polymerase is isolated from a bacterium, *Thermus aquaticus*.

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