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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. Inhibits bacterials dihydrofolate reducatese down thymine






2. Condensed - transciptionally inactive HC- Highly condensed






3. Hn RNA






4. Even 40S 60S =80S






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






6. Ketone






7. Hydroxy proline and hydroxylysine






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






9. Change resulting in early stop codon






10. Stretch of DNA that alters gene expression by binding transcription factors






11. Anti cancer - act on microtubules






12. AUG inAUGurates protein synthesis






13. Does not






14. Ribonucleotide reductase






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






16. Muscle






17. Inhibits by binding to the potassium side






18. Different exons can be combined to make nique protiens in different times






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






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






21. Antigout - acts on mts






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






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






24. Nucleotide excision repair - Base Excision repair - Mismath repair






25. Has enough energy to created the peptide bond






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






27. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






28. 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






29. Each codon specifies only 1 amino acid






30. Prevents stranges from reannealing






31. Neuroglia






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






33. H1 string






34. 1P blocked by chloramphenicaol and macrolide






35. Microvilli - muscle contraction - cytokinesis - adhering juntions






36. MRNA






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






38. Base + ribose






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






40. Uracil






41. Anti breast cancer - acts on mts






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






43. Genetic code is conserved throughout evolution






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






45. Capping on 5 prime end (7 methylguanosine) -






46. ATP- AMP (2 phosphoanhydride bonds)






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






48. Anterograde to microtubule






49. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA






50. 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