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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. Which type of chromatin is condensed - transcriptionally inactive - sterically inaccessible?






2. What does lactase deficiency cause






3. What order kinetics does EtOH dehydrogenase have






4. How many ATP are produced by anearobic glycolysis per molecule of glucose






5. In which state is FBPase -2 active






6. What is the activated carrier for Acyl






7. What is the RDE of cholesterol synthesis






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






9. What is the defectin IV - hypertriglyceridemia






10. What makes up a nucleoside






11. What is the activated carrier for methyl groups






12. What is mosaicism and give an example






13. What step of uric acid synthesis does xanthine oxidase catalyze






14. What is NADPH's role inside RBCs






15. facial lesions - hypopigmented 'ash leaf spots -' cortical and retinal hamartomas - seizures - mental retardation - renal cysts - renal angiomyolipomas - cardiac rhabdomyomas - inc risk of astrocytomas






16. What are the purely ketogenic amino acids






17. What are the mRNA stop codons






18. What is the energy source in the fed state right after a meal






19. The pyruvate dehydrogenase complex serves In what reaction: products






20. Which direction does dynein go






21. A small proportion of Down syndrome is due to What two genetic events






22. The pyruvate dehydorgenase complex serves In what reaction: reactants






23. What lab procedure is used to amplify desired fragment of DNA and What are the 3 steps






24. Delivers hepatic cholesterol to peripheral tissues - formed by LPL modification of VLDL in the peripheral tissue - taken up by target cells via RME






25. What is loss of heterozygosity and give an example






26. What co - factors are required for the pyruvated dehydrogenase complex






27. In base excision repaire - what recognizes and removes damaged bases and what cuts the DNA to remove the empty sugar






28. What does the golgi add to serine and threonine residues






29. What is imprinting and give an example

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30. How do glucagon/epi lead to glycogenolysis






31. antbiotic controlled promoter to induciblly manipulate genes at specific developmental points






32. What causes biotin def






33. What is the RDE of glycogen synthesis






34. What is NAD+ generally used for






35. What does the CFTR channel do in the lungs - GI tract and skin






36. What is the RDE of fatty acid oxidation






37. How many rings do pyrimidines have






38. What is variable expression and What is an example






39. What is the activated carrier for electrons






40. Inhibition of thymidilate synthase and and DHFR lead to decrease In what substance






41. What are the water soluble vitamins - which ones are stored






42. What enzyme degrades a small amount of glycogen in lysosomes






43. How do permanent cells grow and regenerate and What are examples of permanent cells






44. characterize x linked dominant






45. What is codominance and give an example






46. fibrillin defect leading to connective tissue disorder affecting skeleton - heart - and eyes






47. bilateral - massive enlargement of of kidneys due to multiple large cysts






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






49. energy malnutrition resulting in tissues and muscle wasting - loss of subQ fat - variable edema






50. What does helicase do