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Biochemistry

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. What are the fat soluble vitamins and What does their absorption depend on...






2. What substances are uncouling agents






3. What is imprinting and give an example

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4. What enzyme converts adenine to AMP






5. What is loss of heterozygosity and give an example






6. What does vit C def cause






7. Where is EtOH dehydrogenase located






8. Which end of the tRNA is the amino acid bound to...

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9. What does the start codon code for in eukaryotes and prokaryotes






10. In the chromatin structure - which histones form the octamer - and which ties the nucleosome beads together in a string?






11. In which single strand DNA repair mechanism do specific endonucleases release the oligonucTIDE containing bases and DNA poly and ligase fill and reseal - and what disease occures when this is mutated






12. Name as many x- linked recessive disorders as you can

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13. What causes maple syrup urine disease and What does it lead to...






14. What kind of branches do glycogen branches have






15. peripheral neuropathy - developmental delay - optic atrophy - glopoid cells






16. colon becomes covered witih adenomatous polyps after puberty - progresses to colon cancer unless resected






17. pyruvate carboxylase catalyzes what rxn






18. What does vit B3 def result in






19. What does SAM do






20. In which state is FBPase -2 active






21. What does a pyruvate dehydrogenase deficiency lead to and What are the findings






22. What activates the pyruvate dehydrogenase complex






23. What does an umabiguous genetic code refer to...






24. What is the physiologic role of dystrophin






25. What enzyme converts phenylalanine to tyrosin






26. What is Gowers maneuver






27. What does apoE do






28. Which aspect of the spliceosome do patients with lupus make antibodies against






29. Leysh - Nyhan syndrome is a defect in which enzyme and What are the biochemical results






30. In addition to fructose and galactose - what sugards should be excluded from the diets of patients with disorders of fructose or galactose metabolism






31. What happens in elongation of protein synthesis

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32. When does aspartate enter the urea cycle






33. How do aminoglycosides work






34. What does a southern blot use as its sample






35. What does GFAP stain for






36. What is the RDE of TCA cycle






37. What happens in vit D def






38. What are pyrimidines made from






39. What does high cholesterol or long saturated fatty acid content do to the melting temperature and fluidity






40. cytoskeletal elements in micorvilli - muscle contracting fibers - cytokenesis - adherens jxns






41. What does hepatic TG lipase do






42. depression - progressive dementia - choreiform movements - caudate atrophy and dec levels of GABA and ACH in the brain






43. Which part of the DNA binds RNA polymerase and multiple other TFs upstream from gene locus






44. peripheral neuropathy of hands/feet - angiokeratomas - CV/renal disease - dz - def enzyme - acc substrate - inherit






45. What is the TX for PKU






46. Describe the replication fork






47. Do balanced translocations cause abnl phenotype






48. Where does gluconeogenesis primarily happen and What are other sites where the enzymes are located






49. How is ATP used by the cell






50. What enzyme does fructose metabolism bypass to reach glycolysis