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Question

A cell is said to be competent when it is ready to accept a foreign DNA molecule.

A

True

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B

False

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Solution

The correct option is A True
A cell in its natural state will tend to not allow foreign DNA to enter it. But it is possible to artificially make it ready for accepting a foreign DNA primarily through heat-shock, electroporation, etc. Cells ready to accept foreign DNA are called competent cells.

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Similar questions

Q. A cell is said to be competent when it is ready to accept a foreign DNA molecule.

Q. A cell is made competent to take up foreign DNA using the following methods except ?

Q. Cells are made competent to accept foreign DNA by
i. Transferring the cells to calcium rich environment
ii. Electrolysis
iii. Adding restriction enzymes
iv. Electroporation

Q. Cells are made competent to accept foreign DNA by
i. Transferring the cells to calcium rich environment
ii. Electrolysis
iii. Adding restriction enzymes
iv. Electroporation

Q. Assertion: The bacterial cells must first be made ‘competent’ to take up foreign DNA.
Reason: DNA cannot pass through cell membranes since it is a hydrophilic molecule.
Select the correct option.

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