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






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






4. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






5. 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






6. Base+ribose+phosphate linked by a phosphodiester bond






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






8. Inhibits ribonucleotide reductase






9. Has enough energy to created the peptide bond






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






11. Blocks denovo purine synthesis






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






13. Proline - glycine






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






15. 1) primary transcript combines with snRNPs and other proteins to form spliceosome 2) lariat shaped intermediate is generated 3) Lariat is removed and released to precisely join 2 exons






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






17. Prevents stranges from reannealing






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






19. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






20. Inhibits thymidylate synthase down thymine






21. Inhibits by binding to the potassium side






22. AUG inAUGurates protein synthesis






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






24. 4 high enrgy bonds






25. Greater melting temperature lower fluidity






26. Site where negative regulators bind






27. Substituting a pyramidine for a pyrimadine






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






29. 1P (blocked by tetracycline)






30. Hydroxy proline and hydroxylysine






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






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






33. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA






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






35. Connective tissue






36. The 5prime end (energy for the bond)






37. Intervening noncoding segments of DNA






38. Ketone






39. Inhibits bacterials dihydrofolate reducatese down thymine






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






41. 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






42. Methyl THYmine has a meTHYl






43. UGA - UAG - UAA






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






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






46. Rampant - Massive - TIny rRNA is most common - then mRNA and then tRNA






47. G1 - S - G2 - Mitosis






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






49. MRNA






50. Lysine/hydroxylysine and combines to form collagen