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State whether true (T) or false (F) for the following statements, with respect to the structure of DNA.

 

A. It is made up of two polynucleotide chains that have antiparallel polarity.

B. The two chains are coiled in a right–handed fashion.

C. Phosphate group is linked to 5'–OH of the same nucleoside by glycoside linkage for the formation of sugar phosphate

backbone.

D. All four deoxyribonucleotides are always equally present in both the strands.

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Important Questions on Molecular Basis of inheritance

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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Which one of the following has phosphoric acid anhydride bonds?
EASY
Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
If a double-stranded DNA has 15% cytosine, what is the % of adenine in the DNA?
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Melting temperature for double-stranded DNA is the temperature at which 50% of the double-stranded molecules are converted into single stranded molecules. Which one of the following DNA will have the highest melting temperature?
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Which one of the following is the complementary sequence for the DNA with 5′-CGTACTA-3′
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Which one of the following combinations is found in DNA?
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Watson and Crick model of DNA is
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Given the fact that histone binds DNA, it should be rich in:
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Which of the following statements is correct?
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
If a dsDNA has 20% adenine, what would be its cytosine content?
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
What is the length of human DNA containing 6.6×109 bp ?
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
DNA fragments are
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
In sea urchin DNA, which is double-stranded, 17% of the bases were shown to be cytosine. What are the percentages of other three bases expected to be present in this DNA?
EASY
Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Purines found both in DNA and RNA are
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
The association of histone H1 with a nucleosome indicates:
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging

Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?

EASY
Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
The length of DNA helix in a typical nucleosome is
EASY
Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6×109bp bp, then the length of the DNA is approximately
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Considering the average molecular mass of a base to be 500 Da, what is the molecular mass of double stranded DNA of 10 base pairs?
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
Which of the following statements about nucleosome is true?
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Biology>Molecular Biology>Molecular Basis of inheritance>Structure of DNA and DNA Packaging
The molecular weight of E coil. DNA is 3.1×109 g/mol. The average molecular weight of the nucleotide pair is 660 g/mol and each nucleotide pair contributes to 0.34 nm to the length of DNA. The length of E coli DNA molecule will be approximately: