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प्रश्न
In a DNA strand the nucleotides are linked together by ______.
विकल्प
phosphodiester bonds
glycosidic bonds
peptide bonds
hydrogen bonds
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उत्तर
In a DNA strand, the nucleotides are linked together by phosphodiester bonds.
Explanation:
A phosphodiester bond is created between the 5’ phosphate group of one nucleotide and the 3’-OH group of another when nucleotides are integrated into DNA. Each strand of DNA has a phosphate-sugar-phosphate-sugar-phosphate “backbone” in this fashion.
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संबंधित प्रश्न
Group the following as nitrogenous bases and nucleosides:
Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.
If a double stranded DNA has 20 per cent of cytosine, calculate the per cent of adenine in the DNA.
Which property of DNA double helix led Watson and Crick to hypothesise semi-conservative mode of DNA replication? Explain.
One turn of DNA possesses ______.
If a double stranded DNA has 20% of cytosine, what will be the percentage of adenine in it?
In some viruses, RNA is present instead of DNA indicating that ______.
Both deoxyribose and ribose belong to a class of sugars called ______.
The fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix ______.
Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA?
What is the nature of the strands of the DNA duplex?
Protein helping in opening of DNA double helix in front of replications fork is ______.
Synthesis of DNA from RNA is explained by ______.
If 30 percent of an organism’s DNA is thymine, then ______.
H-bonds between Cytosine and Guanine are ______.
By which bonds the purine and pyrimidine pairs of Complementary Strands of DNA held together?
DNA is made of two chains that twist about one another in the shape of a ______.
Which of the following is a structural subunit of DNA?
In the polynucleotide chain of DNA, a nitrogenous base is linked to the -OH of ______
Which of the following is a purine?
A short piece of DNA, having 20 base pairs, was analyzed to find the number of nucleotide bases in each of the polynucleotide strands. Some of the results are shown in the table.
| Number of nucleotide bases | ||||
| Adenine | Cytosine | Guanine | Thymine | |
| Strand 1 | 4 | 4 | ||
| Strand 2 | 5 | |||
How many nucleotides containing Adenine were present in strand 2?
