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First Aid: Biochemistry Molecular

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. 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






2. Made from IMP precursor






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






4. Prophas - metaphase - anaphase telophase






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






6. Attachment of ubiquitin to defective proteinds to tag them for breakdown






7. Change resulting in early stop codon






8. Inhibits bacterials dihydrofolate reducatese down thymine






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






10. Has enough energy to created the peptide bond






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






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






13. Even 40S 60S =80S






14. UGA - UAG - UAA






15. 3 H bonds






16. Neuroglia






17. Proline - glycine






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






19. Faulty collagen synthesis causing 1) hyperextensible skin 2) tendency to bleed 3) hypermobile joints






20. Greater melting temperature lower fluidity






21. P53 and RB normally inhibit g1 to S progression






22. 4 high enrgy bonds






23. Anti breast cancer - acts on mts






24. ATP- AMP (2 phosphoanhydride bonds)






25. Anterograde to microtubule






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






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






28. Anti cancer - act on microtubules






29. Contain the actual genetic information coding for protein






30. Retrograde to microtubules






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






32. Less condensed - transciptionally active=eu truly transcobed






33. Never go to Go divide rapidly with short G1 bone marrow - gut epithelium - skin - hair follicles






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






35. Inhibits dihydrofolate reductase down thymine






36. Antigout - acts on mts






37. Antifungal - act on microtubules






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






39. Elastase






40. H1 string






41. HS1 - HSB - H2 - H4






42. Seals






43. ATP






44. G1 - S - G2 - Mitosis






45. Neurons - skeletal - and cardiac muscle - RBCs






46. Epithelial cells






47. 2 H bonds greater GC content greater melting point






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






49. VItamin C






50. Anit helminth - act on microtubules







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