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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. Base+ribose+phosphate linked by a phosphodiester bond






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






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






4. Condensed - transciptionally inactive HC- Highly condensed






5. 1P (blocked by tetracycline)






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






7. Cilia - glagella - mitotic spindle - neurons - centrioles






8. Splicing out of introns






9. Codes for formyl methionine (f - Met)






10. Inhibits bacterials dihydrofolate reducatese down thymine






11. Proline - glycine






12. Greater melting temperature lower fluidity






13. Seals






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






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






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






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






18. One codon AUG






19. The 3 prime end






20. HS1 - HSB - H2 - H4






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






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






23. Neurons - skeletal - and cardiac muscle - RBCs






24. Inhibits 50S peptidyl transferase






25. Xlinked recessive IV collagen bm - kidney - ear and eye -- nephritis and defness ocular disturbances






26. ATP






27. Each codon specifies only 1 amino acid






28. Antifungal - act on microtubules






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






30. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle






31. Unwinds DNA template at replication fork






32. Base + ribose






33. CCA AT 3 PRIME END






34. Retrograde to microtubules






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






36. G1 - S - G2 - Mitosis






37. Has enough energy to created the peptide bond






38. Methyl THYmine has a meTHYl






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






40. Contain the actual genetic information coding for protein






41. Non homologous end joining






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






43. Antigout - acts on mts






44. Epithelial cells






45. Genetic code is conserved throughout evolution






46. H1 string






47. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end






48. 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






49. Responsible for the accuracy of amino acid selection






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