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DNA Replication: The Molecular Blueprint of Life

Discover the intricate process of DNA replication as a cell duplicates its genetic material for the next generation. Learn about the role of enzymes in unzipping DNA strands, inserting bases, and forming sugar-phosphate links. Explore the essential messenger RNA and its impact on protein synthesis, with insights into its structures and functions in Biology 12. Differentiate between RNA and DNA by examining their sugar, bases, and structural elements. Homework review exercises included.

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DNA Replication: The Molecular Blueprint of Life

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  1. Replication of DNA

  2. Before a cell divides it must duplicate its DNA, so that the new cell will have a complete set of DNA. Each strand of DNA serves as a template against which a new strand is made. • video

  3. The copying process is called “Replication” and is carried out by a series of enzymes. The enzymes unzip the DNA strands, insert appropriate bases, and produce sugar-phosphate links to extend the growing DNA.

  4. The unzipping breaks the hydrogen bonds between bases, allowing new hydrogen bonds to form.

  5. RNA Ribonucleic Acid

  6. Acts as a messenger between DNA and the ribosomes • Carries out process by which proteins are made from amino acids • Founds as three forms which you will learn about in Biology 12: mRNA (messenger), tRNA (transfer), rRNA (ribosomal)

  7. RNA structures • 5 carbon sugar (ribose) • Phosphate • Nitrogenous base: i. Adenosine ii. Cytosine iii. Guanine iv. URACIL

  8. Difference between RNA and DNA deoxyribose ribose sugar bases thymine uracil helix yes no strands 1 2 throughout cell location nucleus

  9. Homework!!! Review 7.2 #1-4

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