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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. Odd 30S plus 50 S=70S






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






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






4. 4 high enrgy bonds






5. Phosphorylation - glycosloation - hyderoxylation






6. Intervening noncoding segments of DNA






7. Attachment of ubiquitin to defective proteinds to tag them for breakdown






8. H1






9. Made from IMP precursor






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






11. 2 H bonds greater GC content greater melting point






12. 9+2 arrangement of microtubules -






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






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






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






16. Seals






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






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






19. Muscle






20. Activated by GTP hydrolosis initiation factors help assembel the 40 S ribosomal subunites with the initiatior tRNA and are released whent he mRNA and the ribosomal subunit assemple with the complex






21. Anit helminth - act on microtubules






22. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






23. Proline - glycine






24. Neurons - skeletal - and cardiac muscle - RBCs






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






26. Exocytose procollagen into extracellylar sace






27. Bind 50S blocking translocation






28. ATP






29. Connective tissue






30. Non homologous end joining






31. Condensed - transciptionally inactive HC- Highly condensed






32. Retrograde to microtubules






33. AUG inAUGurates protein synthesis






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. Ribonucleotide reductase






36. Neuroglia






37. Faulty collagen synthesis causing 1) hyperextensible skin 2) tendency to bleed 3) hypermobile joints






38. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






39. Type III






40. Antigout - acts on mts






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






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






43. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly






44. Be So Totatally Cool Read Books (bOne - CarTWOlage - Threeticular - Type IV under the floor)






45. 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






46. Made from orogate precuror with PRPP added later






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






48. Inhibits ribonucleotide reductase






49. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






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