Assertion : uptake of DNA during transformation is an active, energy requiring process. Reason : Tra

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5.Molecular Basis of Inheritance

normal

Assertion : The uptake of $DNA$ during transformation is an active, energy requiring process.

Reason : Transformation occurs in only those bacteria, which possess the enzymatic machinery involved in the active uptake and recombination

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

(AIIMS-2014)

Solution

Transformation does not involve passive entry of $DNA$ molecules through permeable cell walls and membranes. It does not occur 'naturally' in all species of bacteria, only in those species possessing the enzymatic machinery involved in the active uptake and recombination processes. Even in these species, all cells in a given population are not capable of active uptake of $DNA$. Only competent cells, which possess a so called competence factor are capable of serving as recipients in transformation.

Standard 12

Biology

For providing evidence in favour of semiconservative way of $DNA$ replication; Taylor, Woods and Hughes performed experiments on

normal

If in a test tube, $mRNA$ of E. coli cells and $tRNAs$ from the body of rats are taken and sufficient number of amino acids are put, then the polypeptide synthesized will be of the nature of

normal

Assertion : The uptake of $DNA$ during transformation is an active, energy requiring process.

Reason : Transformation occurs in only those bacteria, which possess the enzymatic machinery involved in the active uptake and recombination

Solution

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Assertion : The uptake of $DNA$ during transformation is an active, energy requiring process. Reason : Transformation occurs in only those bacteria, which possess the enzymatic machinery involved in the active uptake and recombination

Solution

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Assertion : The uptake of $DNA$ during transformation is an active, energy requiring process.

Reason : Transformation occurs in only those bacteria, which possess the enzymatic machinery involved in the active uptake and recombination