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Can Science Explain Life 



Aspargine 



Glutamine 



NH 2 — CO 



CO— OH 



/ 



CH 2 — CH 



/ \ 



NH 2 — CO NH 2 



CO— OH 



/ 



CH 2 — CH 2 — CH 



/ \ 



NH, 



Creatine 



Uric acid 



Plant nucleic acid 



(Phosphoric 

 acid 



Animal nucleic acid 



/ Phosphoric 

 I acid 



Lecithin 



CO— OH 



/ 

 H— CH 



\ 



N C=NH 



/ I 



CH 3 NH 2 



NH— CO 



CO C— NEX 



CO 



NH— C— NH/ 



\ / Guanine \ 



d-Kibose J I CjtosZ ) 

 / 4 \ Uracyl / 



/ \ / Guanine 



/ Desoxy- \ / Adenine 



I ribose I I Cytosine 



\ A \ Thymine, 



CH 3 CH 3 



R"CO 

 O 

 -P— O— CHo— CH— CH 2 

 O 

 K'CO 



CH 3 



O 



O 

 H 



