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First Aid: Biochemistry Molecular

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. Strethchy protein within lungs - large artiers - elastic liaments - vocal cords - ligamenta flava)






2. P53 and RB normally inhibit g1 to S progression






3. Ketone






4. Splicing out of introns






5. Connective tissue






6. Read froma fixed starting point as a continous sequenecs of bases






7. Introns stay In the nucleus whereas EXons EXit and are EXpressed






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






9. Inhibits by binding to the potassium side






10. Blocks denovo purine synthesis






11. Methyl THYmine has a meTHYl






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






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






14. ATP ase that links peripheral 9 doublets and causes bending of cilium by differential sliding of doublets






15. Antigout - acts on mts






16. Inhibits bacterials dihydrofolate reducatese down thymine






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






18. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments






19. Substituting a pyramidine for a pyrimadine






20. Seals






21. Same aa often base change in 3rd position of codon






22. UGA - UAG - UAA






23. Genetic bone disorder (brittle bone disease) type 1 colalgen - fractures (during birth) 2) Blue sclerae 3) hearing loss 4) dental imperfections 1:10000 may be confused with child abuse






24. Never go to Go divide rapidly with short G1 bone marrow - gut epithelium - skin - hair follicles






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






26. Scrutinizes aa before and after it binds to tRNA. If incorrect bond is hydrolyzed.






27. 1P blocked by chloramphenicaol and macrolide






28. Checkpoints control transition between phases of cell cycle. regulated by cyclins - CDKs and tumor suppressors. Mitosis (shortest phse)






29. Even 40S 60S =80S






30. 1P (blocked by tetracycline)






31. Odd 30S plus 50 S=70S






32. Inhibit formation of the initation complex and cause misreading of mRNA






33. Made from orogate precuror with PRPP added later






34. AUG inAUGurates protein synthesis






35. A site - incoming aminoacyl tRNA - Psite accomodates growing Peptide - E site holds EmplytRNA as it exits






36. Binds 50S blocking translocation






37. Uracil






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






39. 4 high enrgy bonds






40. A malfunction of mismatch repair (MUt L etc..)






41. CCA AT 3 PRIME END






42. Type III






43. Inhibits ribonucleotide reductase






44. H1 string






45. Change resulting in early stop codon






46. Substituting a purine for a pyrimdine or vice versa






47. GTP






48. Inhibits 50S peptidyl transferase






49. Neurons






50. Inhibit DNA gyrase (specific prokaryotic topoisomerase)