Biology Chapter 23 Biotechnology Mcqs Test Online Punjab Boards 12th Class

Please wait...

• <<
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• >>

 

Question 1 of 15

Biology

1. A paleontologist, has recovered a bit of tissue from the 400 year old preserved skin of an extinct bird. The researcher would like to compare DNA from the sample with DNA from living birds. Which of the following would be most useful for increasing the amount of the bird DNA available for testing?

1.southern hybridization

2.polymerase chain reaction (PCR)

3.electroporation

4.a RFLP analysis

Question 1 of 15

Question 2 of 15

2. A Plasmid:

1.Is a type of bacteriophage

2.Is used as DNA vector

3.Is a type of cDNA

4.Is a retrovirus

Question 2 of 15

Question 3 of 15

3. A Genomic DNA library:

1.Is a DNA copy of mature mRNAs.

2.Is stored in a collection of recombinant bacteria

3.Is made using reverse transcriptase

4.Represents all the DNA in a specific chromosome

Question 3 of 15

Question 4 of 15

4. Which of the following is highly polymorphic molecular marker which is useful in DNA fingerprinting?

1.Cloned DNA sequence

2.Cosmid cloning vector

3.Palindromic DNA sequence

4.A short tandeam repeats

Question 4 of 15

Question 5 of 15

5. Which of the following sequences in double-stranded DNA is mostly likely to be recognized as a cutting site for a restriction enzyme?

1.GGCC CCGG

2.AC CA TGGT

3.AAGG TTCC

4.AGTC TCAG

Question 5 of 15

Question 6 of 15

6. The Ti plasmid carried by Agrobacterium tumefaciens, is especially useful for introducing genes into a:

1.Plant

2.Bacteria

3.Yeast

4.Animals

Question 6 of 15

Question 7 of 15

7. DNA molecules with complementary sticky ends associate by:

1.Ionic bond

2.Hydrogen bond

3.Covalent bond

4.Disulphide bond

Question 7 of 15

Question 8 of 15

8. The PCR technique polymerase chain reaction:

1.Heat resistance DNA polymerase

2.Restriction enzymes

3.DNA ligase

4.Reverse transcriptase

Question 8 of 15

Question 9 of 15

9. Which technique rapidly replicates specific DNA fragments without cloning?

1.Gel electrophoresis

2.polymerase chain reaction

3.cDNA libraries

4.genetic probe

Question 9 of 15

Question 10 of 15

10. Plants are more readily manipulated by genetic engineering than are animals because:

1.A somatic plant cell can often give rise to a complete plant

2.Plants genes do not contain interon.

3.Genes can be inserted into plant cells by microinjection

4.Plant cell have large nuclei

Question 10 of 15

Question 11 of 15

11. The Dideoxynucleotides (ddATP, ddTTP, ddGTP, and ddCTP) are improvement in DNA sequencing because they:

1.Cause the DNA fragments that contain them to migrate more slowly through the gel

2.Are used as prime

3.Cause premature termination of growing DNA strand

4.Are not affected by high temperature

Question 11 of 15

Question 12 of 15

12. Gel electrophoresis separates nucleic acid on the basis of difference:

1.Length (molecular weight)

2.Nucleotide sequence

3.Relative proportion of adenine and guanine

4.Charge

Question 12 of 15

Question 13 of 15

13. If eukaryotic DNA contains five cleavage sites for a particular restriction enzyme, how many fragments will be produced upon complete digestion of the DNA with that enzyme:

1.4

2.None

3.2

4.6

Question 13 of 15

Question 14 of 15

14. Which of the following tools of recombinant DNA technology is incorrectly paired with its use?

1.Restriction enzyme ------ production of RFLPs.

2.Reverse transcriptase ------ production of cDNA from mRNA.

3.Electrophoresis ------ separation of DNA fragments

4.DNA Ligase ----- enzyme that cuts DNA, creating the sticky ends of restriction fragments

Question 14 of 15

Question 15 of 15

15. A cDNA clone contains:

1.Exons

2.mRNA

3.Anticodon

4.Introns

Question 15 of 15

 Loading...

 

Other Related test

• Punjab 11th Class English The Man Who Was A Hospital Mcqs Test Online
• Punjab 11th Class English Book III Play 1 Heat Lightning Mcqs Test Online
• Punjab 12th Class Chemistry Chapter 2 s – Block Element Mcqs Test Online
• Punjab 9th class Urdu Poem Barsat Ki Baharain Test Online mcqs
• Punjab 9th Class Physics Model Paper 6 MCQs Test Online
• Punjab 12th Class Computer Chapter 8 Introduction to Database Mcqs Test Online
• Punjab 9th Class Pak Studies Model Paper 8 Mcqs Test Online
• Punjab 9th Class Urdu Chapter 10 Mulki Parinday aur Doosray Janwar Mcqs Test Online
• Punjab 12th Class Math Chapter 3 Integration Mcqs Test Online
• Punjab 10th Class Math Chapter 11 Chords and Arcs MCQs Test Online