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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. Elastase






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






4. Antigout - acts on mts






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






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






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






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






9. Anti cancer - act on microtubules






10. CCA AT 3 PRIME END






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






12. (A - G) 2 rings Pure As Gold






13. Responsible for the accuracy of amino acid selection






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






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






16. 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






17. In the nucleus after transcitpion and only processed RNA is transporte out of the nucleus






18. Has enough energy to created the peptide bond






19. 3 H bonds






20. Inhibits dihydrofolate reductase down thymine






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






22. Retrograde to microtubules






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. Type III






25. Codes for formyl methionine (f - Met)






26. Made from IMP precursor






27. Aminoacyl - tRNA binds to A site 2) peptidyltransferase catalyzes peptide bond formation transfers growing polypeptie to amino acid in A site 3) ribosome advances 3 nucleotides toward the 3 prime end of RNA moving peptiydyl RNA to P site






28. The 3 prime hydroxyl of the nascent chain is the target






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






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






31. Asymmetric fluid bilayer - contains - cholesterol - phospholipids - sphingoplipids - glycolipids - and protiends






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






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






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






35. Each codon specifies only 1 amino acid






36. 4 high enrgy bonds






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






38. Create a nick in the helix to relieve supercoils created during replication






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






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






41. Neurons






42. Non homologous end joining






43. Neurons - skeletal - and cardiac muscle - RBCs






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






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






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






47. Ketone






48. Antifungal - act on microtubules






49. 1P blocked by chloramphenicaol and macrolide






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