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    What is DNA in a cell?
    Question

    What is DNA in a cell?

    A.

    Carboxyl acid

    B.

    Fatty Acids

    C.

    Nucleic Aciid

    D.

    Amino Acids

    Correct option is C

    The correct answer is (c) Nucleic Acid

    Explanation:

    DNA (Deoxyribonucleic Acid) is a nucleic acid that carries genetic information in all living organisms. It is present in the nucleus of eukaryotic cells and in the cytoplasm of prokaryotic cells.

    • DNA is made up of nucleotides, each consisting of:
      1. A phosphate group
      2. A deoxyribose sugar
      3. A nitrogenous base (Adenine, Thymine, Cytosine, or Guanine)
    • The structure of DNA is a double helix, discovered by James Watson and Francis Crick in 1953.
    • It carries instructions for protein synthesis and is responsible for hereditary traits.

    Information Booster:

    Functions of DNA:

    • Stores genetic information – Determines physical and functional traits of an organism.
    • Controls protein synthesis – Provides the code for making proteins.
    • Passes traits to offspring – Through replication during cell division.
    • Mutations lead to evolution – Changes in DNA sequences drive evolution and genetic diversity.

    Difference Between DNA & RNA:

    Feature

    DNA

    RNA

    Sugar

    Deoxyribose

    Ribose

    Strands

    Double-stranded

    Single-stranded

    Bases

    A, T, C, G

    A, U, C, G

    Function

    Stores genetic information

    Helps in protein synthesis

    Additional Knowledge:

    • Carboxyl Acid): Carboxyl acids are organic acids found in fatty acids and amino acids.
    • Fatty Acids:fatty acids are components of lipids (fats), not genetic material.
    • Amino Acids: Amino acids are building blocks of proteins, while DNA codes for proteins.

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