Sir Godfrey Hounsfield developed the diagnostic technique of

Statements related to human insulin are given below. Which statement$(s)$ is/are correct about genetically engineered insulin?
$(a)$ Pro-hormone insulin contains an extra stretch of $C$-peptide.
$(b)$ $A$-peptide and $B$-peptide chains of insulin were produced separately in $E. coli$,extracted,and combined by creating disulfide bonds between them.
$(c)$ Insulin used for treating diabetes was extracted from cattle and pigs.
$(d)$ Pro-hormone insulin needs to be processed for converting into a mature and functional hormone.
$(e)$ Some patients develop allergic reactions to the foreign insulin.
Choose the most appropriate answer from the options given below:

Repeated transfusions of genetically modified cells are required in $SCID$ patients and in enzyme replacement therapy because

What is the demerit of using bovine insulin (from cow) and porcine insulin (from pig) in diabetic patients?

Which of the following statements is $NOT$ correct?

The use of living organisms or their substances in industrial processes is called: