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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. Epithelial cells






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






3. Exocytose procollagen into extracellylar sace






4. Type III






5. H1






6. Connective tissue






7. P53 and RB normally inhibit g1 to S progression






8. Prokaryotic only. Elongates leading strand by adding deoxynucleotides to the 3prime end. Elongates laggin strand. 3 prime to 5 prime exonuclease activity






9. Inhibits ribonucleotide reductase






10. Splicing out of introns






11. Responsible for the accuracy of amino acid selection






12. Non homologous end joining






13. Less condensed - transciptionally active=eu truly transcobed






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






15. AD and AR- associated iwth joint dislocation - berry aneurysms - organ rupture






16. Bm - kidney - ears and eyes






17. Inhibits thymidylate synthase down thymine






18. 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






19. Genetic code is conserved throughout evolution






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






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






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






23. Bind 50S blocking translocation






24. MRNA






25. 1P blocked by chloramphenicaol and macrolide






26. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA






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






28. 1P (blocked by tetracycline)






29. Y shaped region along DNA template where leading and lagging strands are syntehsized






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






31. 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






32. Inhibits dihydrofolate reductase down thymine






33. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






34. 4 high enrgy bonds






35. Lysine/hydroxylysine and combines to form collagen






36. 9+2 arrangement of microtubules -






37. Antifungal - act on microtubules






38. Aminoacyl - tRNA binds to A site 2) peptidyltransferase catalyzes peptide bond formation transfers growing polypeptie to amino acid in A site 3) ribosome advances 3 nucleotides toward the 3 prime end of RNA moving peptiydyl RNA to P site






39. RNA polymerase I makes rRNA - RNA pol II makes mRNA - RNA pol III makes tRNA






40. GTP






41. 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






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






43. DNA And RNA synthesized in the 5-3 direction






44. Prevents stranges from reannealing






45. ATP- AMP (2 phosphoanhydride bonds)






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






47. One codon AUG






48. Intervening noncoding segments of DNA






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






50. Greater melting temperature lower fluidity