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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. VItamin C






2. 3 H bonds






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






4. Negatively charged DNA loops twice around histone octamers create a nucloesome bead.






5. 9+2 arrangement of microtubules -






6. UGA - UAG - UAA






7. Anti cancer - act on microtubules






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






9. Antigout - acts on mts






10. Anit helminth - act on microtubules






11. 2 H bonds greater GC content greater melting point






12. Even 40S 60S =80S






13. Type III






14. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






15. AUG inAUGurates protein synthesis






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






17. H1 string






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






19. Remain in G0 regenerate from stem cells






20. 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






21. ATP






22. H1






23. Neuroglia






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






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






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






27. Inhibits ribonucleotide reductase






28. Elastase






29. Inhibits 50S peptidyl transferase






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






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






32. Base + ribose






33. Muscle






34. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






35. Has enough energy to created the peptide bond






36. Commonly results in dramatic decrease in amount of gene transcribed






37. Inhibits bacterials dihydrofolate reducatese down thymine






38. 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






39. Antifungal - act on microtubules






40. Prophas - metaphase - anaphase telophase






41. Substituting a purine for a pyrimdine or vice versa






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






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






44. Bind 30S subunit preventing attachment of aminoacyl - tRNA






45. Less condensed - transciptionally active=eu truly transcobed






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






47. Change resulting in early stop codon






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






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






50. Made from orogate precuror with PRPP added later