Biotechnology- CET Mock Test Paper I

1.       A recombinant DNA molecule is produced by joining together

1.one mRNA with a DNA segment    2.  one mRNA with a tRNA segment

3.    two mRNA molecules                     4.  Two DNA segments

2.       A gene produced for recombinant DNA technology contains a gene from one organism joined to the  regulatory sequence of another gene.  Such a gene is called

1.  oncogene        2. junk gene     3. chimeric gene     4. None

2.      A group of genetically similar organisms obtained by a sexual reproduction is called

1.    Clone   2.  Population   3. Assembly    4.  None

4.       To be useful in the preparation of recombinant DNA, a plasmid must have

1.               No origin of replication  

2.               An origin of replication

3.               The ability to alternate between the linear and circular forms

4.               Restriction endonuclease activity

5.       Restriction endonucleases have the ability of cutting 

1.               DNA at random sites  2.  DNA at specific sites

3.               Both a and b  4.  DNA and RNA at random sites

6.       Endonucleases, a group of enzymes cleave DNA 

1.   Externally    2.  Internally    3.  Both 1 and 2         4. Neither a nor b

7.        The extra chromosomal, self replicating, double stranded, closed, circular DNA molecules are called

1.  Plasmids     2.  Phages     3. Viruses      4. Chloroplasts

8.       A plasmid consisting of its own DNA with a foreign DNA inserted into it is called

1.     recombinant DNA  2.  non-coding DNA

3.      junk DNA  4.  none of the above

9.       Insulin, a protein, consisting of 

1.    2 Polypeptide chains  2.  3 Polypeptide chains

3.    4 Polypeptide chains  4.  more than 4 Polypeptides chains

10.       The first human protein produced through recombinant DNA technology is

1.      insulin    2.  erythropoitin     3.  interferon      4. somatostatin

11.      Humulin, a genetically engineered insulin was produced for the first time by

1.     Biocon India Limited    2. Glaxo    3. Elililly and Company   4. Cipla

12.       The first licenced drug produced through genetic engineering is

1.      interferon      2. insulin       3.  penicillin       4. somatotropin

13.       Before the production of recombinant insulin, insulin for the treatment of diabetes in human was  obtained from

1.        healthy humans       2.  dead human body

3.       cows and pigs  4.  dogs and cats

14.       The plasmid generally used for the production of recombinant insulin is 

1.      RK 646        2.  Ti plasmid       3. ACY 17         4. pUC 18

15.   During recombinant insulin synthesis, the bond between insulin polypeptide and      galactosidase can be removed by using

1.       cyanogen bromide  2. chymotrypsin

3.       carboxy peptidase  4. amylase