Restriction enzymes are _____.

(a)

Not always required in genetic engineering

(b)

Essential tools in genetic engineering

(c)

Nucleases that cleave DNA at specific sites

(d)

both b and c

Which one of the following palindromic base sequence in DNA can be easily cut at about the middle by some particular restriction enzymes?

(a)

5' CGTTCG 3' 3' ATCGTA 5'

(b)

5'GATATG 3'  3' CTACTA 5'

(c)

5'GAATTC 3' 3' CTTAAG 5'

(d)

5'CACGTA 3' 3' CTCAGT 5'

Which of the following one is used as a Biosensors?

(a)

Electrophoresis

(b)

Bioreactors

(c)

Vectors

(d)

Electroporation

In which techniques Ethidium Bromide is used?

(a)

Southern Blotting techniques

(b)

Western Blotting techniques

(c)

Polymerase Chain Reaction

(d)

Agrose Gel Electroporosis

Which of the following person coined the term biotechnology?

(a)

Ernst Hoppe

(b)

Stanley Cohen

(c)

Ian Wilmet

(d)

Karl Ereky

Identify the non-fungal species used in SCP production.
(i) Candida
(ii) Chlorella
(iii) Chlamydomonas
(iv) Cellulomonas

(a)

i and ii

(b)

ii and iii

(c)

ii, iii and iv

(d)

All the above

Observe the diagram and name A and B.

(a)

A - Plasmid B - Vector

(b)

A - Nucleoid - B - Plasmid

(c)

A - Bacterial chromosome B - Vector

(d)

A - Nucleoid - B - x phage DNA

Statement 1: YAC plasmid behaves like a yeast chromosome.
Statement 2: Circular YAC multiplies in bacteria.

(a)

Statement 1 is correct and Statement 2 is also correct.

(b)

Statement 1 is correct and Statement 2 is incorrect

(c)

Both the statements are incorrect.

(d)

Statement 1 is incorrect and Statement 2 is correct.

Assertion (A): Golden rice helps to overcome childhood blindness.
Reason (R): It is rich in J3carotene.

(a)

Both A and R are wrong.

(b)

A is right R is wrong.

(c)

R explains A.

(d)

A and R are right, R does not explain A.

Today more than_______ restriction enzymes have been isolated.

(a)

800

(b)

900

(c)

1000

(d)

870