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






2. Does not






3. Y shaped region along DNA template where leading and lagging strands are syntehsized






4. Unmethylated - newly synthesized string is recognized - mismatched nucleotides are removed and the gap is filled and resealed






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






6. Proline - glycine






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






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






9. Anit helminth - act on microtubules






10. Contain the actual genetic information coding for protein






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






12. Alpha 1 antitrypisn






13. Muscle






14. Introns stay In the nucleus whereas EXons EXit and are EXpressed






15. Genetic code is conserved throughout evolution






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






17. Less condensed - transciptionally active=eu truly transcobed






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






19. Microvilli - muscle contraction - cytokinesis - adhering juntions






20. 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)






21. Uracil






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






23. 9+2 arrangement of microtubules -






24. Blocks denovo purine synthesis






25. Responsible for the accuracy of amino acid selection






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






27. Cyclin depndent kinases; consituative and inactive






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






29. Inhibits dihydrofolate reductase down thymine






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






31. Retrograde to microtubules






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






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






34. Bind 50S blocking translocation






35. H1 string






36. Unwinds DNA template at replication fork






37. Exocytose procollagen into extracellylar sace






38. Inhibits bacterials dihydrofolate reducatese down thymine






39. Microtubule polymerization defect resulting in lowered phagocytosis. results in recurrent pyogenic infections - partial albinism and peripheral neuropathy






40. Non homologous end joining






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






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






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






44. Stretch of DNA that alters gene expression by binding transcription factors






45. Base + ribose






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






47. A malfunction of mismatch repair (MUt L etc..)






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






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






50. Change resulting in early stop codon