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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. Change resulting in early stop codon






2. Methyl THYmine has a meTHYl






3. Inhibits bacterials dihydrofolate reducatese down thymine






4. Made from IMP precursor






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






6. VItamin C






7. Condensed - transciptionally inactive HC- Highly condensed






8. 5 prime to 3 prime






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






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






11. Codes for formyl methionine (f - Met)






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






13. More than 1 codon may code for the same amino acid






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






15. Non homologous end joining






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






17. Splicing out of introns






18. Poly adenylation






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






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






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






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






23. HS1 - HSB - H2 - H4






24. The 3 prime end






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






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






27. Genetic code is conserved throughout evolution






28. H1






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






30. Connective tissue






31. 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






32. Neuroglia






33. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes






34. Inhibits dihydrofolate reductase down thymine






35. Blocks denovo purine synthesis






36. 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






37. Hn RNA






38. Phosphorylation - glycosloation - hyderoxylation






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






40. Inhibits ribonucleotide reductase






41. Proline - glycine






42. Site of dteroid synthesis and detoxification of druigs and poisons (liver hepatocytes and steroid horomore adrenal cortex)






43. Neurons - skeletal - and cardiac muscle - RBCs






44. Unmethylated - newly synthesized string is recognized - mismatched nucleotides are removed and the gap is filled and resealed






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






46. Elastase






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






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






49. Antigout - acts on mts






50. 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