Home page of the tests Instructions Abbreviations References Work team Distribution of the questions in subtopics Acknowledgements Preface from Professor T. Nikolov About Professor Todor Nikolov

ABBREVIATIONS USED  A Adenine ADP Adenosine 5'-diphosphate Ala Alanine AMP Adenosine 5'-monophosphate ATP Adenosine 5'-triphosphate AS Adenylosuccinate Asn Asparagine BPG 2,3-Bisphosphoglycerate C Cytosine CDP Cytidine 5'-diphosphate CK Creatine kinase CK-MB MB isozyme of creatine kinase CM Chylomicrons CMP Cytidine 5'-monophosphate CNS Central nervous system CoA Coenzyme A CoQ Coenzyme Q CTP Cytidine 5'-triphosphate d Deoxy- DHAP Dihydroxyacetone phosphate DNA Deoxyribonucleic acids FAD/FADH2 oxidized and reduced flavin adenine dinucleotide FMN/FMNH2 oxidized and reduced flavin mononucleotide G Guanine GDP Guanosine 5'-diphosphate Gly Glycine GMP Guanosine 5'-monophosphate GTP Guanosine 5'-triphosphate HDL High-density lipoproteins IDL Intermediate-density lipoproteins IMP Inosine monophosphate LDH Lactate dehydrogenase LDL Low-density lipoproteins Leu Leucine LP Lipoproteins Lys Lysine mRNA Messenger ribonucleic acids NAD and NADH + H+ Oxidized and reduced nicotinamide adenine dinucleotide NADP and NADPH + H+ Oxidized and reduced nicotinamide adenine dinucleotide phosphate PG Prostaglandins Pi Inorganic phosphate PPi Pyrophosphate PRPPi 5-Phosporibosyl-1-pyrophosphate RNA Ribonucleic acids rRNA Ribosomal ribonucleic acids snRNAs Small nuclear RNAs T Thymine TAG Triacylglycerols TDP Thymidine 5'-diphosphate Thr Threonine TMP Thymidine 5'-monophosphate tRNA Transfer ribonucleic acids Trp Tryptophan TTP Thymidine 5'-triphosphate Tx Thromboxanes U Uracil UDP Uridine 5'-diphosphate UMP Uridine 5'-monophosphate UTP Uridine 5'-triphosphate Val Valine VLDL Very-low-density lipoproteins XMP Xanthosine monophosphate