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






2. Phosphorylation - glycosloation - hyderoxylation






3. Inhibits bacterials dihydrofolate reducatese down thymine






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






5. Epithelial cells






6. Antifungal - act on microtubules






7. Substituting a purine for a pyrimdine or vice versa






8. VItamin C






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






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






11. Inhibits 50S peptidyl transferase






12. 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






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






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






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






16. HS1 - HSB - H2 - H4






17. No proofreading function but can initiate chains. RNA poymerase II opens DNA at promoter site






18. Changed aaconservative - new aa is similar in chemical structure






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






20. Genetic code is conserved throughout evolution






21. Tansport cellular cargo toward opposite ends of microtubule tracks






22. Neurons






23. 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






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






25. Unwinds DNA template at replication fork






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






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






28. You glyucosolate hte pro - alpha chain lysine resudens and form procollagen (triple helix of alpha chains)






29. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






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






31. Neurons - skeletal - and cardiac muscle - RBCs






32. Made from orogate precuror with PRPP added later






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






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






35. Bm - kidney - ears and eyes






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






37. P53 and RB normally inhibit g1 to S progression






38. Non homologous end joining






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






40. Blocks denovo purine synthesis






41. AUG inAUGurates protein synthesis






42. Does not






43. Hn RNA






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






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






46. Contain the actual genetic information coding for protein






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






48. Each codon specifies only 1 amino acid






49. Prophas - metaphase - anaphase telophase






50. Hydroxy proline and hydroxylysine