Tag: genetically engineered insulin

Questions Related to genetically engineered insulin

Multiple Choice Question

Which one of the following is now being commercially produced by biotechnological procedures?

  1. Nicotine

  2. Morphine

  3. Quinine

  4. Insulin


Correct Option: D
Explanation:

Biotechnology refers to technology used to manipulate DNA. The procedures are often referred to as genetic engineering. DNA is the genetic material of all living organisms and all organisms use the same genetic code. Genes from one kind of organism can be transcribed and translated when put into another kind of organism. For example, human and other genes are routinely put into bacteria in order to synthesize products for medical treatment and commercial use. Human insulin, human growth hormone, and vaccines are produced by bacteria.

Globular protein of ~ 6kDaconsisting of 51 amino acids arranged in two polypeptide chains held by disulphide bridge is

  1. Insulin

  2. Fibrinogen

  3. Glucagon

  4. Keratin


Correct Option: A

Genetic engineering has helped in production of

  1. Thyroxine

  2. Insulin

  3. Parathormone

  4. Epinephrine


Correct Option: B

Which one of correct?

  1. Centromere is found in animal cells which produces aster during cell division

  2. Insulin gene is present in every body cell

  3. Nucleosome is formed of nucleotides

  4. DNA has a core of eight histones


Correct Option: B

Maturation of proinsulin into insulin takes place after

  1. Joining of c-peptide

  2. Removal of c-peptide

  3. Removal of disulphide bridge

  4. Addition of disulphide bridge


Correct Option: B

Recombinant DNA bearing ampicillin resistance gene is passed in E. coli. The latter are spread on agar plates containing ampicillin. Then

  1. Both transformed and untransformed cells die

  2. Both transformed and untransformed cells grow

  3. Transformed recipient cells grow and untransformed cells die

  4. Transformed recipient cells die and untransformed cells grow


Correct Option: C

Escherichia coli having plasmids for production of human insulin is cultured in medium containing __________.

  1. Glucose

  2. Maltose

  3. Lactose

  4. Sucrose


Correct Option: C

Some of the steps involved in the production of humulin are given below. Choose the correct sequence
(i)   Synthesis of insulin gene artificially
(ii)  Culturing recombinant E. coli in bioreactors
(iii) Purification of humulin
(iv) Insertion of human insulin gene into a plasmid
(v)  Introduction of recombinant plasmid into E.coli
(vi) Extraction of a recombinant gene product from E. coli

  1. ii, i, iv, iii, v, vi

  2. i, iv, v, ii, vi, iii

  3. i, iii, v, vi, ii, iv

  4. iii, v, ii, i, vi, iv


Correct Option: B

In the technique of recombinant insulin production, the genes for $\alpha$- and $\beta$ - polypeptides were inserted into the plasmid by the side of __________.

  1. Antibiotic resistance gene

  2. Lac Z promoter gene

  3. $\beta$-galactosidase gene

  4. Ori


Correct Option: C

Human insulin is being commercially produced from transgenic species of _____________.

  1. E. coli

  2. Brassica napus

  3. Bacillus thuringiensis

  4. Agrobacterium


Correct Option: A
Explanation:

Human insulin is produced from genetically engineered E.coli. By using genetic engineering or recombinant DNA technology, insulin-producing genes from human beings have been transferred into E.coli. bacteria, which produced insulin called 'humulin' for clinical use. This type of insulin was produced commercially by an American pharmaceutical firm Eli Lily on 5th July, 1983.


So, the correct answer is 'E.coli'.