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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. Tansport cellular cargo toward opposite ends of microtubule tracks






2. Elastase






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






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






5. Bind 50S blocking translocation






6. Does not






7. Regulatory proteins that control cell cycle events; phase specific; activated CDKs






8. Prophas - metaphase - anaphase telophase






9. Odd 30S plus 50 S=70S






10. Poly adenylation






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






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






13. 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






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






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






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






17. Xlinked recessive IV collagen bm - kidney - ear and eye -- nephritis and defness ocular disturbances






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






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






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






21. Hydroxy proline and hydroxylysine






22. Neurons






23. ATP- AMP (2 phosphoanhydride bonds)






24. Anit helminth - act on microtubules






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






26. Each codon specifies only 1 amino acid






27. GTP






28. Inhibits ribonucleotide reductase






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






30. Base + ribose






31. Alpha 1 antitrypisn






32. Retrograde to microtubules






33. Neuroglia






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






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






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






37. Blocks denovo purine synthesis






38. Inhibits 50S peptidyl transferase






39. 5 prime to 3 prime






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






41. Inhibits dihydrofolate reductase down thymine






42. Epithelial cells






43. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






44. HS1 - HSB - H2 - H4






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






46. MRNA






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






48. Antifungal - act on microtubules






49. Specific glycosylases recognize and remove damaged bases - AP endonuclease cuts DNA at pyrimidne site - empty sugar is removed and the gap is filled and resealed






50. Cyclin depndent kinases; consituative and inactive