Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Biotechnology Principles and Processes question

2022 · Q93
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Biotechnology Principles and Processes
  5. /2022 · Q93

Biotechnology Principles and Processes question

2022 · Q93

NEETBiologyBiotechnology Principles and ProcessesMCQ+4 / −1

Refer to the following statements for agarose-gel electrophoresis:

(a) Agarose is a natural polymer obtained from sea-weed.

(b) The separation of DNA molecules in agarose-gel electrophoresis depends on the size of DNA.

(c) The DNA migrates from negatively-charged electrode to the positively-charged electrode

(d) The DNA migrates from positively-charged electrode to the negatively-charged electrode.

Choose the most appropriate answer from the options given below :

  1. A
    (b), (c) and (d) only
  2. B
    (a) and (b) only
  3. C
    (a), (b) and (c) only
  4. D
    (a), (b) and (d) only
View written solutionFree

Correct answer: C

Option (c) is the correct answer as the most commonly used matrix in gel electrophoresis is agarose which is a natural polymer extracted from sea weeds.

In agarose gel electrophoresis, the DNA fragments separate (resolve) according to their size through sieving effect provided by the agarose gel.

Since, DNA fragments are negatively charged molecules, they migrate towards the anode (positively-charged electrode) under an electric field through a medium/martix.

PreviousNext

More from Biotechnology Principles and Processes

  • Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Polymerase chain reaction is used in DNA amplification. Reason (R) : The ampicillin resistant gene is used as a…2022 · MCQ
  • Which one of the following statement is not true regarding gel electrophoresis technique?2022 · MCQ
  • Given below are two statements: Statement I : Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence. Statement II : Restriction endonucleases cut the DNA strand a little away from the…2022 · MCQ
  • Which of the following is not a desirable feature of a cloning vector?2022 · MCQ
  • Match List-I with List-II . Choose the correct answer from the options given below. Includes table2021 · MCQ
  • Which of the following is not an application of PCR (Polymerase Chain Reaction)?2021 · MCQ
  • Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?2021 · MCQ
  • Plasmid pBR322 has Pst I restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain2021 · MCQ