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  • DNA and Protein Synthesis: How Cells Build Proteins
    Cells store genetic information in DNA, which is used to synthesize proteins.

    Here's a breakdown of the process:

    1. DNA contains the genetic code: DNA acts like a blueprint, containing instructions for building and maintaining an organism. These instructions are encoded in the sequence of its four nucleotide bases (adenine, guanine, cytosine, and thymine).

    2. Transcription: The DNA code is transcribed into RNA, a similar molecule. This process takes place in the nucleus of the cell.

    3. Translation: The RNA molecule travels to the ribosomes, where it is translated into a chain of amino acids. This chain folds into a specific three-dimensional structure, forming a protein.

    4. Proteins perform various functions: Proteins are the workhorses of the cell, carrying out a wide variety of tasks, including:

    * Enzymes: Catalyze chemical reactions.

    * Structural components: Provide support and shape to cells and tissues.

    * Hormones: Act as chemical messengers.

    * Antibodies: Defend the body against infection.

    * Transport molecules: Move substances across cell membranes.

    Therefore, DNA acts as the master instruction manual, and proteins are the products that carry out the instructions.

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