61. Which of the following statement is not true for Xanthine-guanine phosphoribosyl transferase (XGPRT)?
62. Production of monoclonal antibodies by hybridoma technology requires
63. Choose the correct combination of True (T) and False (F) statements about microcarriers used in animal cell culture.
P. Higher cell densities can be achieved using microcarriers.
Q. Microcarriers increase the surface area for cell growth.
R. Microcarriers are used for both anchorage- and non-anchorage-dependent cells.
S. Absence of surface charge on microcarriers enhances attachment of cells.
P. Higher cell densities can be achieved using microcarriers.
Q. Microcarriers increase the surface area for cell growth.
R. Microcarriers are used for both anchorage- and non-anchorage-dependent cells.
S. Absence of surface charge on microcarriers enhances attachment of cells.
64. The bacteria known to be naturally competent for transformation of DNA is
65. Which of the following DNA Pol has proofreading property in animal cells?
66. When electroporation is used for introducing DNA into mammalian cell
P. A carrier for DNA is not required.
Q. The lipid bilayer (membrane) interacts with an electric pulse to generate permeation sites.
R. The viability of the cell becomes approximately zero percent.
S. The first step involves absorption of DNA on the cell membrane.
P. A carrier for DNA is not required.
Q. The lipid bilayer (membrane) interacts with an electric pulse to generate permeation sites.
R. The viability of the cell becomes approximately zero percent.
S. The first step involves absorption of DNA on the cell membrane.
67. Positional cloning approach exploits information
68. Determine the correctness or otherwise of the following Assertion [A] and the Reason [R].
Assertion [A]: Embryonic stem cells are suitable for developing knockout mice.
Reason [R]: Homologous recombination is more frequent in embryonic stem cells than that in somatic cells.
Assertion [A]: Embryonic stem cells are suitable for developing knockout mice.
Reason [R]: Homologous recombination is more frequent in embryonic stem cells than that in somatic cells.