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






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






3. Microvilli - muscle contraction - cytokinesis - adhering juntions






4. Cyclin depndent kinases; consituative and inactive






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






6. 2 H bonds greater GC content greater melting point






7. Site where negative regulators bind






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






9. Prophas - metaphase - anaphase telophase






10. Even 40S 60S =80S






11. Each codon specifies only 1 amino acid






12. Binds 50S blocking translocation






13. Site of dteroid synthesis and detoxification of druigs and poisons (liver hepatocytes and steroid horomore adrenal cortex)






14. Does not






15. Inhibits 50S peptidyl transferase






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






17. You glyucosolate hte pro - alpha chain lysine resudens and form procollagen (triple helix of alpha chains)






18. Xlinked recessive IV collagen bm - kidney - ear and eye -- nephritis and defness ocular disturbances






19. Close to - far from or even within (in an intron) the gene whose expression it regulates






20. Greater melting temperature lower fluidity






21. Base + ribose






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






23. Brings together 2 ends of DNA fragments no requirement for homology






24. Inhibits dihydrofolate reductase down thymine






25. 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






26. Prokaryotic only. Elongates leading strand by adding deoxynucleotides to the 3prime end. Elongates laggin strand. 3 prime to 5 prime exonuclease activity






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






28. Neurons






29. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






30. H1 string






31. Completed protein is released from ribosme through simple hydrolosis and dissociates






32. Made from orogate precuror with PRPP added later






33. Prokaryotic only. Degrades RNA primer and fills in the gap with DNA (5 prime to 3 prime exonuclease)






34. Makes an RNA primer on which DNA polymerase II can initiate replication






35. Site where RNA polymerase and multiple other transciption factors bind to DNA upstream from gene locus (AT rich upstream sequence with TATA and CAAT boxes)






36. 9+2 arrangement of microtubules -






37. 3 H bonds






38. Unattached to any membrane; site of cytosolic and organeller prtoeins






39. VItamin C






40. The 3 prime end






41. Made from IMP precursor






42. CUT 1 ring Cut the Py






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






44. Change resulting in misreading of all nucleotides downstream - usually resulting in a truncated non functional protien






45. Elastase






46. Substituting a purine for a pyrimdine or vice versa






47. Codes for formyl methionine (f - Met)






48. Splicing out of introns






49. Responsible for the accuracy of amino acid selection






50. G1 - S - G2 - Mitosis