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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 happens in zinc def






2. How many nucTIDEs is a tRNA and What does the secondary sturcture form






3. How does insulin inhibit glycogenolysis






4. What does apoE do






5. What is axonemal dynein






6. What metabolic rxns occur in both the cytoplasm and mitochondria






7. In eukaryotes - What does RNA poly II make






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






9. What is the mutation in beckers muscular dystrophy - What is the severity and time of onset






10. How does ouabain work






11. What defects characterize velocardiofacial syndrome






12. How many ATP are created by aerobic metobolism of glucose in muslce via what shuttle






13. Is there any requirement for homology in NHEJ






14. What does biotin def cause






15. What is the source of energy in the fasting state between meals






16. What is the amino acid precuros for niacin and serotonin/melatonin






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






18. What is the pathway in the fasting state leading to inc FBPase -2 and dec PFK-2






19. What else can phosphoylate phosphorylase kinase






20. Which antihelminthe drugs work on microtubules






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






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






23. What is a missense mutation






24. What does a kinase do






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






26. What does Alports syndrome cause and why






27. What part of the pre mRNA contains the actual genetic information coding for protein






28. How many rings do pyrimidines have






29. In what cells do the respiratory burst occur






30. What occurs to oxaloacetate in starvation and DKA






31. In eukaryotes - What does RNA poly I make






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

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33. inc glycogen in muscle but can't break it down - painful muscle cramps - myglobinuria with strenuous exercise - dz and enzyme

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34. cell signaling defect of fibroblast growth factor (FGF) receptor 3 - results in dwarfism - short limbs - head/trunk nl size - associated with advanced paternal age






35. What are the glucogenic essential amino acids






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






37. What causes Marfan syndrome






38. What are the symptoms of vit A def






39. What inhibits pyruvate kinase






40. An inability to convert orotic acid to UMP would be caused by a deficiency either of which two enzymes

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41. What does commaless - nonoverlapping genetic code refer to...






42. What are the fetal screening measures for Down






43. What is the main source of folate






44. What is the activated carrier for aldehyddes






45. bilateral acoustic schwannomas - juvenile cataracts






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






47. trinucleotide repeat fo myotonic dystrophy






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






49. What collagen type is most frequently affected in ehlers danlos and What are common complications






50. What happens in folate def