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






2. Methyl THYmine has a meTHYl






3. Odd 30S plus 50 S=70S






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






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






6. Hn RNA






7. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






8. 1P (blocked by tetracycline)






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






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






11. Has enough energy to created the peptide bond






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






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






14. CUT 1 ring Cut the Py






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






16. Unwinds DNA template at replication fork






17. 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






18. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






19. Inhibits thymidylate synthase down thymine






20. Epithelial cells






21. Blocks denovo purine synthesis






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






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






24. Inhibits dihydrofolate reductase down thymine






25. 5 prime to 3 prime






26. Inhibit DNA gyrase (specific prokaryotic topoisomerase)






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






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






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






31. One codon AUG






32. ATP- AMP (2 phosphoanhydride bonds)






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






34. Inhibits ribonucleotide reductase






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






36. Base + ribose






37. 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






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






39. HS1 - HSB - H2 - H4






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






41. RER translation of collagen alpha chains (preprocollagen) usually Gly-X-Y






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






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






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






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






46. Ketone






47. The 3 prime end






48. Makes an RNA primer on which DNA polymerase II can initiate replication






49. Inhibit formation of the initation complex and cause misreading of mRNA






50. Antigout - acts on mts