Start learning →

NEET UG Biotechnology: Principles and Processes — practice questions — page 2

Explore 84 free Biotechnology: Principles and Processes questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

Practise Biotechnology: Principles and Processes with Quill →

Biotechnology: Principles and Processes questions and exercises with answers

Showing questions 31–60 of 84.

Towards which electrode do DNA fragments move in a gel?Read the answer and worked solution →Agarose, the common gel matrix for DNA, is extracted from what?Read the answer and worked solution →Which compound is used to stain DNA so its bands show under UV light?Read the answer and worked solution →What colour do ethidium bromide stained DNA bands show under UV light?Read the answer and worked solution →Cutting separated DNA bands out of agarose and extracting them is called what?Read the answer and worked solution →Besides starting replication, ori also controls what?Read the answer and worked solution →What does a selectable marker in a vector do?Read the answer and worked solution →The procedure that introduces a piece of DNA into a host bacterium is called what?Read the answer and worked solution →Why should a vector carry a single site for a given restriction enzyme?Read the answer and worked solution →Foreign DNA ligated at the BamH I site of pBR322 makes the plasmid lose which trait?Read the answer and worked solution →After insertion at the BamH I site of pBR322, recombinants grow how?Read the answer and worked solution →What is it called when an insert disrupts a vector gene and stops its product?Read the answer and worked solution →Colour-based selection of recombinants inserts DNA into the gene of which enzyme?Read the answer and worked solution →With a chromogenic substrate, colonies whose plasmid carries an insert appear how?Read the answer and worked solution →Why is antibiotic-inactivation selection called cumbersome?Read the answer and worked solution →Which dicot pathogen delivers T-DNA to cause plant tumours?Read the answer and worked solution →In the Ti plasmid of Agrobacterium, what does Ti stand for?Read the answer and worked solution →Which disarmed agents are used as vectors to deliver genes into animal cells?Read the answer and worked solution →Why can DNA not pass through cell membranes on its own?Read the answer and worked solution →Treating bacteria with ions of which element makes them competent to take up DNA?Read the answer and worked solution →At what temperature is the brief heat shock given to competent E. coli cells?Read the answer and worked solution →Injecting recombinant DNA straight into an animal cell nucleus is called what?Read the answer and worked solution →In the gene gun method, DNA is coated onto micro-particles of which metals?Read the answer and worked solution →Which enzyme is used to break open fungal cells to release their DNA?Read the answer and worked solution →During DNA isolation, contaminating RNA is removed by treatment with what?Read the answer and worked solution →Purified DNA precipitates out as fine threads after adding which reagent?Read the answer and worked solution →The threads of DNA that separate out after precipitation are removed by what?Read the answer and worked solution →Which technique is used to check how far a restriction digestion has progressed?Read the answer and worked solution →What does the abbreviation PCR stand for?Read the answer and worked solution →In PCR, what are primers?Read the answer and worked solution →

Worked practice questions

Towards which electrode do DNA fragments move in a gel?

  1. Anode, the positive electrode
  2. Cathode, the negative electrode
  3. Neither, they stay in the wells
  4. Both electrodes equally
Show answer and solution

Correct answer: A. Anode, the positive electrode

DNA carries a negative charge, so it migrates to the positive electrode, the anode.

Open this question →

Agarose, the common gel matrix for DNA, is extracted from what?

  1. Cotton fibres
  2. Animal bones
  3. Seaweeds
  4. Fungal walls
Show answer and solution

Correct answer: C. Seaweeds

Agarose is a natural polymer obtained from seaweeds.

Open this question →

Which compound is used to stain DNA so its bands show under UV light?

  1. Methylene blue
  2. Ethidium bromide
  3. Crystal violet
  4. Aceto-carmine
Show answer and solution

Correct answer: B. Ethidium bromide

Pure DNA is invisible, so it is stained with ethidium bromide and viewed under UV radiation.

Open this question →

How to practise

  1. Choose a Biotechnology: Principles and Processes question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Biotechnology: Principles and Processes practice for NEET UG. Read explanations as you go. No signup form needed to start.

Practise Biotechnology: Principles and Processes →

More Biology topics

Genetics and EvolutionReproduction in Organisms & PlantsBiotechnology and ApplicationsBiodiversity and ConservationThe Living World & Biological ClassificationNeural Control and Chemical CoordinationPrinciples of Inheritance and VariationAnimal Kingdom