The_chemistry_of_life

The_chemistry_of_life - Cell chemistry is hierarchical...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Cell chemistry is hierarchical Inorganic precursors Small organic molecules The chemistry of life BIO 1140 – SLIDE 1 Macromolecules Supramolecular structures Organelles/structures Cell Review of macromolecules Carbohydrates Polymers of monosaccharides (polysaccharides) Energy storage Structural chitin BIO 1140 – SLIDE 2 http:/ www.mpie.de/index.php?id=2957 Purple pages F23 starch glycogen cel ulose chitin Monosaccharides C n H 2n O n n = 3 to 7 Trioses, pentoses and hexoses most common Linear vs ring configuration Asymmetrical C isomers glyceraldehyde ribose BIO 1140 – SLIDE 3 Purple pages F20-21 ß-D-glucose Fig. 2.13 D-glucose -D-glucose January 19th, 2012- Polysaccharides Glycosidic bond C1 to C4 vs ß starch glycogen BIO 1140 – SLIDE 4 Purple pages F22-23 NH C=O CH 3 NH C=O CH 3 NH C=O CH 3 NH C=O CH 3 cel ulose chitin Fig. 2.17 Karp 2010 Test your recall: Distinguish between a polymer and a polysaccharide. Provide an example of a carbohydrate used for energy storage. Glucose is a 6-carbon sugar or __________________. Why are there and ß forms of glucose in the ring configuration but not in the linear configuration? What carbohydrate is formed from repeated units of ß-glucose? Can humans digest this carbohydrate? BIO 1140 – SLIDE 5 Nucleic acids Polymers of nucleotides Informational DNA vs RNA Nucleotides 5C sugar – ribose or deoxyribose nitrogenous base Purine: adenine, guanine Pyrimidine: cytosine thymine urac BIO 1140 – SLIDE 6 H (deoxyribose) Purple pages F29-30 Fig. 4.12 Pyrimidine: cytosine, thymine, uracil Sugar + base = nucleoside Up to 3 phosphate groups nucleotide Several different roles in cell... Nucleic acids Polymers of nucleotides Informational DNA vs RNA Nucleotides 5C sugar – ribose or deoxyribose nitrogenous base Purine: adenine, guanine Pyrimidine: cytosine thymine urac BIO 1140 – SLIDE 7 H (deoxyribose) Fig. 4.12 Pyrimidine: cytosine, thymine, uracil Sugar + base = nucleoside Up to 3 phosphate groups nucleotide Several different roles in cell... Adenosine Adenosine monophosphate (AMP) Adenosine diphosphate (ADP) Adenosine triphosphate (ATP) Base Adenine Guanine Cytosine Thymine Uracil Nucleoside Adenosine or deoxyadenosine Guanosine or deoxyguanosine Cytidine or deoxycytidine Deoxythymidine Uridine 5’ end Sugar-phosphate backbone Nucleic acids Phosphodiester bond RNA single-stranded DNA double-stranded Double helix James Watson & Francis Crick, Nature 1953 BIO 1140 – SLIDE 8 Purple pages F30 Fig. 2.53 Karp 2010 3’ end Sugar-phosphate backbone 5’ end 3’ end Nucleic acids Phosphodiester bond RNA single-stranded DNA double-stranded Double helix James Watson & Francis Crick, Nature 1953 (see http://www.nature.com/nature/dna50/archive.html ) BIO 1140 – SLIDE 9 Purple pages F30 3’ end 5’ end...
View Full Document

This note was uploaded on 03/26/2012 for the course BIO 1140 taught by Professor Fenwick during the Winter '07 term at University of Ottawa.

Page1 / 9

The_chemistry_of_life - Cell chemistry is hierarchical...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online