Tag: structure of dna and rna

Questions Related to structure of dna and rna

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structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Direction of RNA Synthesis ----- Direction of reading of template DNA Strand

    3 5------5 3

  2. Direction of RNA Synthesis ----- Direction of reading of template DNA Strand

    5 3------5 3

  3. Direction of RNA Synthesis---- Direction of reading of template DNA Strand

    3 5------3 5

  4. Direction of RNA Synthesis - ---- Direction of reading of template DNA Strand

    5 3 ----- 3 5

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Correct Option: D

Identify the DNA segment which is not pallindromic

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. 5'-GAATTC -3'

    3'-CTTAAG-5'

  2. 5'-CCCGGG-3'

    3'-GGGCCC-5'

  3. 5-GGATCC-3'

    3' GGTACC-5'

  4. 5'-GCGGCCGC-3'

    3-CGCCGGCG-5'

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Correct Option: C

The terminator/stop codons UGA, UAG and UAA

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Initiate translation

  2. Do not code for any amino acid

  3. Code for only one amino acid

  4. Code for more than one amino acid

  5. Initiate transcription

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Correct Option: B

Which one of the following alternations in DNA is likely to be lethal?

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Substitution of adenine for cytosine

  2. Substitution of methyl cytosine for cytosine

  3. Deletion of thee nucleotides

  4. Insertion of one nucleotide

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Correct Option: A

An increased melting temperature for duplex DNA results from a high content of _________________.

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Adenine$+$ guanine

  2. Cytosine$+$thymine

  3. Cytosine$+$guanine

  4. Adenine$+$ cytosine

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Correct Option: A

The successive nucleotides of RNA are covalently linked through ______________.

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Glycoside bonds

  2. Hydrogen bonds

  3. Phosphodiester bonds

  4. Peptide bonds

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Correct Option: A

In nematode resistance by RNA interference , some specific genes were introduced which form ds RNA these were introduced in ?

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Nematode

  2. Host plant

  3. Agrobacteroum

  4. All of the above

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Correct Option: A

The discovery of DNA helix was made by

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Wilkins

  2. Franklin

  3. Astbury

  4. Chargaff

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Correct Option: A

Okazaki segments develop in

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Newly synthesised leading strand

  2. Newly synthesised lagging strand

  3. Master strand

  4. Template strands of DNA

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Correct Option: A

The double helix of DNA consists of

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Phosphodiester bonds

  2. Stacking of bases

  3. Base pairing

  4. All of these

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Correct Option: D