GEB (Ch. 16): Self-reference and Self-reproduction

This Chapter is about the connection between self-reference in its various guises, and self-reproducing entities e.g., computer programs or DNA molecules). The relations between a self-reproducing entity and the mechanisms external to it which aid it in reproducing itself (e.g., a computer or proteins) are discussed-particularly the fuzziness of the distinction. How information travels between various levels of such systems is the central topic of this Chapter.

7 flashcards · Mathematics · by lakesare

1. State the Central Dogma of Molecular Biology. Enunciated by Francis Crick (one of the co-discoverers of the double-helix structure of DNA).

   Once information passed into protein, it can't get out again. The Central Dogma. This states that once "information" has passed into protein it cannot get out again. In more detail, the transfer of information from nucleic acid to nucleic acid, or from nucleic acid to protein may be possible, but transfer from protein to protein, or from protein to nucleic acid is impossible. Information means here the precise determination of sequence, either of bases in the nucleic acid or of amino acid resid…

2. What are these called: _____________ VS _____________

   What are these called: Bases 4 bases: A, C, G, T.Strands A strand is a string of bases.

3. Name 4 bases (of DNA).

   Purinas: A (Adenine)/G (Guanine) AGiPyrimidines: C (Cytosine)/T (Thymine) CiTy Achilles - Tortoise; Crab - his Genes

4. What bases are: purine VS pyriminidine?

   Achilles - Tortoise;Crab - his Genes

5. Visually imagine: amino-acid VS enzyme.

   amino-acids We shall refer to the three-letter abbreviations of commands as amino acids. enzyme Thus, every enzyme is made up of a sequence of amino acids.

6. Name 2 things you can create from a DNA strand.

   Verbs (enzymes) and nouns (strands again).

7. Visually imagine: covalent bonds VS hydrogen bonds in DNA.