1. #1
    Unregistered

    What is the difference between DNA and RNA?

    hello

    Difference between D.N.A , R.N.A.




  2. #2
    kitkat
    Join Date
    Oct 2011
    Posts
    1,629

    Re: What is the difference between DNA and RNA?

    HAI,,,,,,,,,,,,,,
    DEAR you must ask your doubts regarding the career doubts in this forum ,,as you have your doubt regarding the DNA AND RNA:
    DNA Stands for:
    Deoxyribo Nucleic Acid
    RNA Stands for:
    Ribo Nucleic Acid
    Definition OF DNA:
    A nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms.
    Definition OF RNA:
    RNA, single-stranded chain of alternating phosphate and ribose units with the bases adenine, guanine, cytosine, and uracil bonded to the ribose. RNA molecules are involved in protein synthesis and sometimes in the transmission of genetic information.
    Job/Role of DNA:
    Medium of long-term storage and transmission of genetic information
    Job/Role of RNA:
    main job of RNA is to transfer the genetic code need for the creation of proteins from the nucleus to the ribosome. this process prevents the DNA from having to leave the nucleus, so it stays safe. Without RNA, proteins could never be made.
    Unique Features of DNA:
    The helix geometry of DNA is of B-Form. DNA is completely protected by the body i.e. the body destroys enzymes that cleave DNA. DNA can be damaged by exposure to Ultra-violet rays
    Unique Features of RNA:
    The helix geometry of RNA is of A-Form.RNA strands are continually made, broken down and reused. RNA is more resistant to damage by Ultra-violet rays.
    Predominant Structure of DNA:
    Typically a double- stranded molecule with a long chain of nucleotides
    Predominant Structure of RNA:
    A single-stranded molecule in most of its biological roles and has a shorter chain of nucleotides
    Bases & Sugars of DNA:
    DNA is a long polymer with a deoxyribose and phosphate backbone and four different bases: adenine, guanine, cytosine and thymine
    Bases & Sugars of RNA:
    RNA is a polymer with a ribose and phosphate backbone and four different bases: adenine, guanine, cytosine, and uracil
    DNA Pairing Bases:
    A-T(Adenine-Thymine), G-C(Guanine-Cytosine)
    RNA pairing bases:
    A-U(Adenine-Uracil), G-C(Guanine-Cytosine)
    Stability of a DNA:

    Deoxyribose sugar in DNA is less reactive because of C-H bonds. Stable in alkaline conditions. DNA has smaller grooves where the damaging enzyme can attach which makes it harder for the enzyme to attack DNA.
    Stability of RNA:

    Ribose sugar is more reactive because of C-OH (hydroxyl) bonds. Not stable in alkaline conditions. RNA on the other hand has larger grooves which makes it easier to be attacked by enzymes.
    SO DEAR ALL TEH BEST




  3. #3
    spider man
    Join Date
    Nov 2012
    Posts
    974

    Re: What is the difference between DNA and RNA?

    hello sir the difference between DNA and RNA is
    1. The main difference between DNA and RNA is the sugar present in the molecules.
    2. While the sugar present in a RNA molecule is ribose, the sugar present in a molecule of DNA is deoxyribose.
    3. Deoxyribose is the same as ribose, except that the ribose has one more OH ion .

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