Biotechnology: Principles and Processes

During PCR, primers bind to the DNA strands in the step.

1. ligation
2. denaturation
3. extension
4. annealing

[figure] In the above represented plasmid, an alien piece of DNA is inserted at EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies?

1. White color colonies will be selected.
2. Blue color colonies grown on ampicillin plates can be selected.
3. Using ampicillin & tetracycline containing medium plate.
4. Blue color colonies will be selected.

Polymerase chain reaction (PCR) amplifies DNA following the equation.

1. 2n+1
2. 2 N2
3. N2
4. 2n

Identify the part of a bio-reactor which is used as a foam breaker from the given figure. [figure]

1. D
2. C
3. A
4. B

The blue and white selectable markers have been developed which differentiate recombinant colonies from non-recombinant colonies on the basis of their ability to produce colour in the presence of a chromogenic substrate. Given below are two statements about this method: In the light of the above statements, choose the most appropriate answer from the options given below:

1. Statement I is correct but Statement II is incorrect
2. Statement I is incorrect but Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect

Which of the following enzyme(s) are NOT essential for gene cloning? Choose the correct answer from the options given below:

1. D and E only
2. B and C only
3. C and D only
4. A and B only

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below :

1. Statement I is correct but statement II is incorrect
2. Statement I is incorrect but statement II is correct
3. Both statement I and statement II are correct
4. Both statement I and statement II are incorrect

Hind II always cuts DNA molecules at a particular point called recognition sequence and it consists of:

1. 8 bp
2. 6 bp
3. 4 bp
4. 10 bp

What is the fate of a piece of DNA carrying only gene of interest which is transferred into an alien organism? Choose the correct answer from the options given below:

1. A and B only
2. D and E only
3. B and C only
4. A and E only

The "Ti plasmid" of Agrobacterium tumefaciens stands for

1. Tumour inhibiting plasmid
2. Tumor independent plasmid
3. Tumor inducing plasmid
4. Temperature independent plasmid