Free Biotechnology Principles And Processes (Daily Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Biotechnology Principles And Processes (Daily Quiz: 1) Time:

Question-1

Engineered bacterium carries

(a)

(b)

(c)

(d)


Question-2

Study the given diagram and identify the enzymes A and B involved in steps I and II.

biotechnology-principles-and-processes-class-xii-Chapter-11-neet-mcq-quiz-pdf

 Step IStep II
(a)Eco RIDNA ligase
(b)Alu IDNA ligase
(c)Hind IIDNA polymerase
(d)Restriction endonucleaseDNA polymerase

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Enzyme A is Eco RI which is used in step I and enzyme B is DNA ligase, used in step II. Eco RI cuts the DNA between bases G and A only when the sequence GAATTC is present in the DNA. This enzyme cuts both DNA strands at the same site. Enzyme ligase joins the complementary DNA fragments at their sticky ends to form the recombinant DNA.


Question-3

Recombinant DNA is achieved by cleaving the pro-DNAs by

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Recombinant DNA is the product obtained after isolating a specific DNA segment and then inserting it into another DNA molecule at a desired position. Restriction endonucleases are the enzymes that digest DNA at specific sites to isolate a specific DNA segment. Thus they are required for producing recombinant DNA.


Question-4

Introduction of one or more genes into an organism which normally does not possess them or their deletion by using artificial means (not by breeding) comes under

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Genetic engineering is the science of gene manipulation. It involves the isolation, manipulation, transfer, and reintroduction of DNA into cells or model organisms usually to express a protein. The aim is to introduce new characteristics or attributes physiologically or physically, such as making a crop resistant to a herbicide, introducing a novel trait, or producing a new protein or enzyme, along with altering the organism to produce more of certain traits.


Question-5

The bacteria generally used for genetic engineering is

(a)

(b)

(c)

(d)


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