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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. Nucleotide excision repair - Base Excision repair - Mismath repair






2. Elastase






3. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine






4. Tansport cellular cargo toward opposite ends of microtubule tracks






5. Intervening noncoding segments of DNA






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






7. Never go to Go divide rapidly with short G1 bone marrow - gut epithelium - skin - hair follicles






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






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






10. Hydroxy proline and hydroxylysine






11. 9+2 arrangement of microtubules -






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






13. Must be both activated and inactivated for cell cycle to progress






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






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






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






17. Inhibits bacterials dihydrofolate reducatese down thymine






18. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA






19. Ribonucleotide reductase






20. Greater melting temperature lower fluidity






21. UGA - UAG - UAA






22. Inhibits dihydrofolate reductase down thymine






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






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






25. P53 and RB normally inhibit g1 to S progression






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






27. Codes for formyl methionine (f - Met)






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






29. Promoter - enhancer - promoter - TATA- transcription initiation site - coding region (including exons and introns) and then the AATAAA






30. MRNA






31. VItamin C






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






33. Substituting a pyramidine for a pyrimadine






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






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






36. Each codon specifies only 1 amino acid






37. Anti cancer - act on microtubules






38. Non homologous end joining






39. Prevents stranges from reannealing






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






41. One codon AUG






42. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)






43. Seals






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






45. ATP- AMP (2 phosphoanhydride bonds)






46. Poly adenylation






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






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






49. Condensed - transciptionally inactive HC- Highly condensed






50. 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