The diagram below represents some steps in a procedure used in the field of biotechnology. Enzymes
)
+
Gene for
human
insulin
Cut
bacterial
DNA
Inserted into
bacterial cell
Bacterial cell
This bacterial cell can now be used to produce
1. the bacterial gene for insulin that can be inserted into humans
2. human genes for enzymes that can be inserted into humans
3. insulin that can be used by humans
4. enzymes necessary to treat human diseases