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






2. 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






3. Inhbits RNA pol II (found in death cap mushrooms)






4. Non homologous end joining






5. Poly adenylation






6. No proofreading function but can initiate chains. RNA poymerase II opens DNA at promoter site






7. Blocks denovo purine synthesis






8. Nucleotide excision repair - Base Excision repair - Mismath repair






9. Odd 30S plus 50 S=70S






10. AD and AR- associated iwth joint dislocation - berry aneurysms - organ rupture






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






12. Anit helminth - act on microtubules






13. Inhibits by binding to the potassium side






14. Capping on 5 prime end (7 methylguanosine) -






15. Cyclin depndent kinases; consituative and inactive






16. Remain in G0 regenerate from stem cells






17. Responsible for the accuracy of amino acid selection






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






19. VItamin C






20. Binds 50S blocking translocation






21. Accurate base pairing is required only in the first 2 nucleotide positions of an mRNA so codons differing ht e3rd wobble psoition may code for the same tRNA/amino acid code






22. Microvilli - muscle contraction - cytokinesis - adhering juntions






23. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






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






25. Ketone






26. The N to C






27. H1 string






28. More than 1 codon may code for the same amino acid






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






30. Neurons






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






32. Has enough energy to created the peptide bond






33. Anti breast cancer - acts on mts






34. G1 - S - G2 - Mitosis






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






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






37. Exocytose procollagen into extracellylar sace






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






39. Anti cancer - act on microtubules






40. Uracil






41. Made from orogate precuror with PRPP added later






42. Site where negative regulators bind






43. 3 H bonds






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






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






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






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






48. 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)






49. Proline - glycine






50. AUG inAUGurates protein synthesis