Identify '$Q$' and '$R$' in the given figure of a stirred-tank bioreactor.

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A):$
Polymerase chain reaction is used in $DNA$ amplification.
Reason $(R):$
The ampicillin resistant gene is used as a selectable marker to check transformation.
In the light of the above statements,choose the correct answer from the options given below:

The ability to multiply copies of an antibiotic resistance gene in $E. coli$ is called.....

Identify the figure given below.

Match the following columns:

Column-$I$	Column-$II$
$(a)$ $Salmonella$	$(1)$ $Ti$ plasmid
$(b)$ $E. coli$	$(2)$ Thermostable $DNA$ polymerase
$(c)$ $Agrobacterium$ $tumefaciens$	$(3)$ Plasmid for first $r-DNA$
$(d)$ $Thermus$ $aquaticus$	$(4)$ $EcoR I$

Match the contents of List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. Bioreactors	$(i)$ Insulin produced by rDNA technology
$B$. Downstream processing	$(ii)$ Vessels which convert raw material into specific product
$C$. Recombinant protein	$(iii)$ Detect mutated genes in suspected cancer patient
$D$. $PCR$	$(iv)$ Involves separation and purification