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






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






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






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






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






6. 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






7. Methyl THYmine has a meTHYl






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






9. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






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






11. Inhibits ribonucleotide reductase






12. Inhibits by binding to the potassium side






13. Ketone






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






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






16. VItamin C






17. Strethchy protein within lungs - large artiers - elastic liaments - vocal cords - ligamenta flava)






18. GTP






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






20. Has enough energy to created the peptide bond






21. CUT 1 ring Cut the Py






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






23. Seals






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






25. Inhibits bacterials dihydrofolate reducatese down thymine






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






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






28. Neurons






29. Hydroxy proline and hydroxylysine






30. G1 - S - G2 - Mitosis






31. 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






32. Methionine - which may be removed before translation is completed






33. CCA AT 3 PRIME END






34. 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






35. 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)






36. Unwinds DNA template at replication fork






37. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA






38. H1






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






40. Microvilli - muscle contraction - cytokinesis - adhering juntions






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






42. Commonly results in dramatic decrease in amount of gene transcribed






43. 1P (blocked by tetracycline)






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






45. Phosphorylation - glycosloation - hyderoxylation






46. Condensed - transciptionally inactive HC- Highly condensed






47. 2 H bonds greater GC content greater melting point






48. Exocytose procollagen into extracellylar sace






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






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