Question

Many bacterial species are having a natural ability to take up the exogenous DNA material. Which of the statement is not correct in regard to it?

(a) This ability is termed as competence

(b) It is not limited to particular growth phases

(c) The bacteria may develop new biochemical abilities under special conditions such as nutrient deprivation

(d) Induction of specific set of bacterial proteins may take place

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Answer 1

The correct option is (b) It is not limited to particular growth phases

To explain: This ability is termed as competence and it is limited to particular growth phases. It may lead to developing new biochemical abilities under special conditions such as nutrient deprivation. If the bacterial cells are naturally competent, they may take the foreign DNA by simply incubating them with foreign DNA.