Test your basic knowledge |

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. Proline - glycine






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






3. 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






4. Hydroxy proline and hydroxylysine






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






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






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






8. Intervening noncoding segments of DNA






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






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






11. Prophas - metaphase - anaphase telophase






12. Site where negative regulators bind






13. Inhibits ribonucleotide reductase






14. A site - incoming aminoacyl tRNA - Psite accomodates growing Peptide - E site holds EmplytRNA as it exits






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






16. Inhbits RNA pol II (found in death cap mushrooms)






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






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






19. Contain the actual genetic information coding for protein






20. Substituting a purine for a pyrimdine or vice versa






21. The N to C






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






23. Each codon specifies only 1 amino acid






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






25. Has enough energy to created the peptide bond






26. G1 - S - G2 - Mitosis






27. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments






28. CCA AT 3 PRIME END






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






30. Inhibits 50S peptidyl transferase






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






32. Exocytose procollagen into extracellylar sace






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






34. Codes for formyl methionine (f - Met)






35. Retrograde to microtubules






36. Close to - far from or even within (in an intron) the gene whose expression it regulates






37. 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






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






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






40. Neurons






41. H1






42. 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






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






44. Lysine/hydroxylysine and combines to form collagen






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






46. Prevents stranges from reannealing






47. One codon AUG






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






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






50. Uracil