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Biochemistry

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  • Answer 50 questions in 15 minutes.
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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. Describe the location and fxn of the Na/K ATPase






2. What enzyme converts glucose 1 p to UDP glucose






3. Acetyl - CoA carboxylase catalyzes what rxn






4. Which amino acids are elastin rich in






5. Which step in the de novo purine and pyrimidine synthesis pathway requires just aspartate






6. In what direction are DNA and RNA synthesized

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7. Broadly - What can cause fat - soluble vitamin deficiencies






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






9. What enzyme catalyzes the rxn from pyrvuate to Acetyl - CoA and what inhibits it






10. What is a nonsense mutation






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






12. What activates the pyruvate dehydrogenase complex






13. What is the limiting reagent in EtOH metabolism






14. What does the mutation in the gene cause in protein synthesis






15. What are the two possible causes of albinism






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






17. What defects characterize DiGeorge syndrome






18. What is pseudohypertrophy in the calf a result of - and What are the cardiac manifestations






19. What step begins the urea cycle and What is the enzyme needed - Where does it happen






20. Where is glucose 6 phosphatase found and What does it do






21. What apolipoprotein is on LDL






22. What components come together to make S- adenosyl methionine






23. Gene imprinting implies that How many alleles are active at a single locus






24. What is the Name and function of vit B2






25. What is variable expression and What is an example






26. What is the activated carrier for methyl groups






27. When are glycogen reserves depleted






28. What are the complications/signs of familial hypercholesterolemia






29. What causes Hartnup's disease






30. If two alleles are present - but the active allele is deleted - what happens






31. What is the breakdown product of dopamine






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






33. What are the function of vit C






34. Pts with albinism are at inc risk For what cancer






35. Which bond is stronger AT or CG and why? What is the laboratory consequence of this?






36. What is disulfiram used for






37. What do neurofilaments stain for






38. What tissues have both enzymes of sorbitol metabolism






39. Delivers dietary TGs to peripheral tissues - delivers cholesterol to liver in the form of remnants - mostly depleted of TGs - secreted by intestinal epith cells






40. How is ATP used by the cell






41. What is anticipation and give an example






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






43. What are the findings with homocystinuria and What amino acid is needs to be supplemented






44. Fluorescent DNA or RNA probe binds to specific gene of interest - used for specific localization of genes and direct visualization of anomalies - like microdeletions - at molecular level






45. What happens in vit K def






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






47. What is mosaicism and give an example






48. How do odd chain fatty acids participate in gluconeogenesis






49. What does the golgi do to sugars in proteoglycans and of selected tyrosine on proteins






50. Which anticancer drugs work on microtubules






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