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First Aid: Biochemistry Molecular

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Unattached to any membrane; site of cytosolic and organeller prtoeins






2. Different exons can be combined to make nique protiens in different times






3. Methionine - which may be removed before translation is completed






4. 4 high enrgy bonds






5. Rampant - Massive - TIny rRNA is most common - then mRNA and then tRNA






6. Less condensed - transciptionally active=eu truly transcobed






7. Substituting a pyramidine for a pyrimadine






8. Condensed - transciptionally inactive HC- Highly condensed






9. UGA - UAG - UAA






10. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine






11. Trimming removal of n or c terminal propeptides from zymogens to generate mature proteinds






12. Inhibits the atpase which increases intracellular sodium which increases intracellular calcium increases cardiaccontractility






13. Anterograde to microtubule






14. Seals






15. Negatively charged DNA loops twice around histone octamers create a nucloesome bead.






16. Made from IMP precursor






17. In the nucleus after transcitpion and only processed RNA is transporte out of the nucleus






18. Inhibits dihydrofolate reductase down thymine






19. Inhibits 50S peptidyl transferase






20. Connective tissue






21. Stretch of DNA that alters gene expression by binding transcription factors






22. Unwinds DNA template at replication fork






23. RNA polymerase I makes rRNA - RNA pol II makes mRNA - RNA pol III makes tRNA






24. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






25. DNA And RNA synthesized in the 5-3 direction






26. Neuroglia






27. Specific endonucleases release the oligonucleotide containing damaged bases. DNA polymerase and logase fill and resealt eh gap






28. Commonly results in dramatic decrease in amount of gene transcribed






29. VItamin C






30. The N to C






31. Bind 30S subunit preventing attachment of aminoacyl - tRNA






32. Even 40S 60S =80S






33. Particular sequnece in genomre where DNA replication begins. May be single (prokaryotes) or multiple (eukaryotes)






34. Immotile cilia due to a dyenin arm defect. Results in male nad female inferticility (sperm immotile) - bronchiectasis - and recurrent sinusisits - associated with situs inversus






35. Tansport cellular cargo toward opposite ends of microtubule tracks






36. Hn RNA






37. Substituting a purine for a pyrimdine or vice versa






38. The 3 prime end






39. Cilia - glagella - mitotic spindle - neurons - centrioles






40. Mutation in nucleotide excision repair Dry skin with melanoma and other cancers






41. Unmethylated - newly synthesized string is recognized - mismatched nucleotides are removed and the gap is filled and resealed






42. Phosphorylation - glycosloation - hyderoxylation






43. Inhibits ribonucleotide reductase






44. Codes for formyl methionine (f - Met)






45. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)






46. Inhibits thymidylate synthase down thymine






47. MRNA






48. Cleave terminal regions of procollagen to transform into insoluable tropocolagen






49. 5 prime to 3 prime






50. Uracil







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