Biotechnology Quiz: Multiple Choice Questions
10 Questions
| Total Attempts: 892
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Questions and Answers
- 1.The nitrogen bases which pair with two hydrogen bonds are
- A.
Adenine and thymine
- B.
Adenine and cytosine
- C.
Cytosine and guanine
- D.
Cytosine and adenine
- 2.DNA differs from RNA in
- A.
Presence of deoxyribose sugar
- B.
Presence of thymine base
- C.
Property of replication
- D.
All of the above
- 3.Extranuclear genetic material is found in
- A.
Plastid and nucleus
- B.
Mitochondria and plastids
- C.
Nucleus and cytoplasm
- D.
Mitochondria and nucleus
- 4.Which of the following enzyme is required to release the tension imposed by uncoiling of strands?
- A.
Endonuclease
- B.
DNA ligase
- C.
DNA gyrase
- D.
DNA helicase
- 5.The enzyme that cuts the bonds of DNA molecule at the origin of replication is
- A.
Endonuclease
- B.
DNA polymerase
- C.
DNA gyrase
- D.
DNA ligase
- 6.If the strand of DNA has 35 nucleotides, how many phosphodiester bonds would exist?
- A.
34
- B.
35
- C.
24
- D.
70
- 7.Formation of mRNA from DNA is called
- A.
Transformation
- B.
Transduction
- C.
Translation
- D.
Transcription
- 8.Which of the following is not tool of genetic engineering?
- A.
Vectors
- B.
Enzymes
- C.
Foreign DNA
- D.
GMO
- 9.In recombinant DNA technology a plasmid vector is cleaved
- A.
Modified DNA ligase
- B.
A heated alkaline solution
- C.
The same enzyme that cleave the donor DNA
- D.
The different enzyme other than that cleave the donor DNA
- 10.'Nif gene' for nitrogen fixation is cereal crops like wheat, etc is introduced by cloning
- A.
Rhizobium meliloti
- B.
Bacillus thuringiensis
- C.
Rhizopus
- D.
Rhizophora
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