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प्रश्न
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उत्तर
Features of DNA:
(a) DNA consists of two strands which are spirally arranged around an axis. This is called a double helical arrangement.
(b) Each DNA strand is made up of nitrogenous bases, pentose sugar and phosphate.
(c) Sugars are pentose type; bases are adenine, guanine, cytosine and thymine.
(d) Both strands are connected with hydrogen bonds. There are two bonds between adenine and thymine and three bonds between guanine and cytosine.
(e) In the DNA, bases are inside and sugars are outside and two sugars are connected with phosphoric acid.
(f) Each DNA strand replicates and from each replicated DNA a new DNA is formed. This is called replication of DNA.
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संबंधित प्रश्न
Answer the following question in your own words.
Describe the structure of the DNA molecule.
Write a sentence of the following:
Chromonemata
Fill in the blank:
DNA replicates in the ______ of the cell cycle.
DNA strands are made up of phosphate groups, pentose sugar and four types of ______ bases.
Write the functional activity of the following structure:
DNA
Multiple Choice Question:
In the RNA molecule, which nitrogen base is found in place of thymine?
DNA consists of two ______ chains.
Which of the following basic proteins DNA is associated?
Decarboxylation is not involved in:
