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Nucleic Acids

Nucleic Acids

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Nucleic Acids

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  1. Nucleic Acids Nucleic acids are compounds that contain: C, H, O, N, P Organic, or inorganic? Organic!!!

  2. 2 Types 1. DNA Deoxyribonucleic acid 2. RNA Ribonucleic acid

  3. Deoxy what? The building block of DNA is called a nucleotide. Each nucleotide is composed of 3 things: 1) A 5-Carbon sugar 2) A phosphate group 3) A nitrogenous base

  4. Sugar babies… In DNA, the 5 carbon sugar is called deoxyribose. HOCH2 O H H H OH H OH H

  5. Phosphate? The phosphate group (PO4) looks like this: O O- P O- O-

  6. Nitrogenous bases: Nitrogenous bases are organic compounds that contain… nitrogen!!! There are 4 nitrogenous bases: Adenine, guanine, cytosine, thymine

  7. Nitrogenous bases continued: Adenine always bonds with thymine. Guanine always bonds with cytosine. Or… A – T G – C

  8. Putting it together… If you put it all together, you make DNA DNA looks like a ladder!!!

  9. Nucleotide structure: nucleotide Sugar Nitrogenous base Phosphate

  10. DNA structure: A T C G T A

  11. DNA again… DNA is actually coiled into a double helix, or twisted ladder:

  12. DNA’s job in a cell… DNA is what makes up our genetic information. Each cell in our body contains a copy of our entire DNA code (over 3 billion pairs of nucleotides!!!)

  13. DNA once more… If we were to stretch our DNA out, it would be about 4 cm long, but because it twists up into a double helix, it can fit into our cells with no problem.

  14. RNA!!! RNA is involved in protein synthesis.

  15. Ribose vs Deoxyribose HOCH2 O H HOCH2 O H H H H H OH OH H H OH OH OH H Deoxyribose Ribose

  16. Other differences? RNA is only a single strand…what is DNA? Double Helix In RNA, thymine (T) is replaced by uracil(U).