In gel electrophoresis,the separated bands of $DNA$ are cut out and extracted from the gel piece. This step is called

To introduce recombinant $DNA$ into a host cell,it is first kept on ice,then placed at ........ temperature,and finally placed back on ice. (in $^{\circ} C$)

What is downstream processing?

In the process of recombinant $DNA$ technology,proteins and lipids are removed from the medium by which enzymes,respectively?

The steps involved in the Southern blot test are as follows:
$I.$ $X-ray$ film
$II.$ Electrophoresis
$III.$ Digestion with restriction enzyme
$IV.$ Ethidium bromide
$V.$ Radioactive probe
Choose the option having the correct sequential order of these events.

Which process takes place in a bioreactor?