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Biochemistry

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. How do tetracyclines work






2. What drugs can cause folate def






3. What defects characterize DiGeorge syndrome






4. What are the characteristics of angelmans syndrome and How does it occur






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






6. How doe NADH electrons from glycolysis and the TCA cycle enter the mitochondiria






7. Which step in the de novo purine and pyrimidine synthesis pathway requires aspartate - glycine - glutamine and THF






8. What rxn does propionyl - CoA carboxylase catalyze






9. What is the breakdown product of dopamine






10. Type IV BM






11. Which kind of osteogenesis imperfecta is fata in utero or in neonatal period






12. In what cells do the respiratory burst occur






13. What enzyme does fructose metabolism bypass to reach glycolysis






14. What catacholamine step is SAM required for






15. Where is PEP carboxykinase found - What does it do - and What does it require






16. in a 100 meter sprint Where does energy come from






17. Outside the fibroblast What part of procollagen is cleaved and What is it transformed into






18. What is dominant negative mutation and give an example






19. What does DNA ligase do






20. What does the addition of mannose -6 phosphate do






21. several distinct syndromes characterized by familial tumors of endocrine glands including pancreas - parathyroid - pituitary - thryoid and adrenal medulla - disorders and gene association






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

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23. What are pyrimidines made from






24. What metabolic rxns occur in the mitochondria






25. In which state is PFK-2 active






26. Which phase of the HMP shunt is reversible and Which is irreversible






27. What is the fxn of vit D






28. What are the physical findings of fragile x syndrome






29. What are Heinz bodies






30. phosphorylation of glucose to yield glucose 6 phosphate serves as the 1st step of what rxns and what enzymes catalyze it






31. What happens in zinc def






32. Which direction does kinesin go






33. What is sorbitol - how and why is it made






34. Where are cytosolic and organellar proteins made






35. What happens in folate def






36. What else can phosphoylate phosphorylase kinase






37. What is the rate limiting enzyme in cholesterol synthesis






38. Which are the basic amino acids






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






40. What does osteogenesis imperfecta causes and why






41. What two cells are particularly rich in RER






42. progressive neurodegeneration - developmental delay - cherry red spot on macula - lysosomes with onion skin - NO hepatosplenomegaly






43. What is the fxn of vit K






44. What apolipoprotiens are on VLDL






45. What is the activated carrier for electrons






46. bilateral acoustic schwannomas - juvenile cataracts






47. What chromosome is the NF gene on...






48. What is the RDE of gluconeogenesis






49. What sugar is sorbitol converted to and via what enzyme - and What can happen in cells lacking this enzyme






50. Severe fasting hypoglycemia - inc glycogen storage in liver - inc blood lactate - hepatomegaly - dz and def enzyme