Significance of heat shock method in bacteria | vedclass

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Question

(C) The heat shock method is a technique used in genetic engineering to introduce recombinant $DNA$ into bacterial cells (like $E. coli$).Bacteria are

Vedclass · Accepted Answer

Uptake of $DNA$ through transient pores in the bacterial cell wall

Vedclass · Answer

(C) The heat shock method is a technique used in genetic engineering to introduce recombinant $DNA$ into bacterial cells (like $E. coli$).Bacteria are generally not capable of taking up foreign $DNA$ directly from their environment.To make them 'competent',they are treated with a divalent cation (like $Ca^{2+}$),which increases the efficiency with which $DNA$ enters the bacterium through pores in its cell wall.During the heat shock process,the cells are incubated with recombinant $DNA$ on ice,then placed briefly at $42^{\circ}C$ (heat shock),and finally put back on ice.This sudden temperature change creates transient pores in the bacterial cell wall,allowing the recombinant $DNA$ to enter the cell.

Significance of heat shock method in bacterial transformation is to facilitate

Similar Questions

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.

After the biosynthetic phase, the product is separated & purified by the process called :-

The flowchart given below represents the process of recombinant $DNA$ technology. Identify $A$,$B$,and $C$.

Which enzyme is required to obtain $DNA$ in its pure form from a cell?

The presence of a chromogenic substrate gives ............ coloured colonies.

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