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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. Prevents stranges from reannealing






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






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






4. 2 H bonds greater GC content greater melting point






5. Non homologous end joining






6. Less condensed - transciptionally active=eu truly transcobed






7. One codon AUG






8. Ketone






9. Has enough energy to created the peptide bond






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






11. Changed aaconservative - new aa is similar in chemical structure






12. P53 and RB normally inhibit g1 to S progression






13. 4 high enrgy bonds






14. Seals






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






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






17. Binds 50S blocking translocation






18. Proline - glycine






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






20. 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






21. Lysine/hydroxylysine and combines to form collagen






22. Neurons






23. ATP






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






25. Tansport cellular cargo toward opposite ends of microtubule tracks






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






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






28. Inhibits dihydrofolate reductase down thymine






29. Made from orogate precuror with PRPP added later






30. Phosphorylation - glycosloation - hyderoxylation






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






32. Splicing out of introns






33. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






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






35. Responsible for the accuracy of amino acid selection






36. 5 prime to 3 prime






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






38. CUT 1 ring Cut the Py






39. Elastase






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






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






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






43. Cyclin depndent kinases; consituative and inactive






44. Substituting a purine for a pyrimdine or vice versa






45. Bm - kidney - ears and eyes






46. Must be both activated and inactivated for cell cycle to progress






47. 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)






48. Neurons - skeletal - and cardiac muscle - RBCs






49. MRNA






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