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Nucleic Acids

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Nucleic Acids

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  1. Directions:Press F5 at the top of the keyboard to begin PowerPoint.Take notes on the PowerPoint, being sure to add any pictures that may be important. When finished answer the REview questions on your notes being sure to write the questions. When you are done, come up to me and have me stamp your work.If you finish with time to spare you may work on something else quietly.

  2. Nucleic Acids

  3. Nucleic Acid Basics • Contain instructions to build proteins • 2 types: • DNA • RNA • Composed of smaller units called nucleotides • Monomer: Nucleotide • Polymer: Nucleic acid

  4. NucleotideStructure • Three parts • Sugar molecule • Phosphate group • Nitrogen base • Adenine • Thymine • Guanine • Cytosine • Nucleotides combine to make nucleic acids • Instructions for cell to make proteins

  5. Monomers link to make polymers!Nucleic AcidsMonomer = NucleotidePolymer = Nucleic acid How many nucleotides are pictured? Six What is this chain of nucleotides called? Nucleic acid

  6. DNA A T • Double Helix: 2 chains of nucleotides • Four DNA bases: Adenine, thymine, cytosine, guanine • A pairs with T • C pairs with G (can you predict the missing bases?) • Gene: Section of DNA that codes for a protein G C G C C G T A

  7. How many Nucleotides?

  8. RNA U • Single chain of nucleotides • RNA bases: Adenine, uracil, cytosine, guanine • Function: Help cells with the creation of proteins C U G A

  9. REview Nucleotides Name the polymer of nucleotides. Draw and label a nucleotide. How are the four nitrogen bases of DNA abbreviated? What does the phosphate molecule of a nucleotide bond with? What do you call a section of DNA that codes for a protein? If the DNA nitrogen bases were TACCGGAT, how would the attached DNA strand read? How are DNA and RNA different?

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