Test your basic knowledge |

GRE Biochemistry

Subjects : gre, science
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. Isoelectric point and MW






2. Contain their own DNA - mRNA - and proteins to synthesize more






3. Only one carbon center is changed






4. Possess F factor integrated into the bacterial genome. After integration into the host chromosomal DNA - these plasmids possess portions of - or entire - F factor and portions of the bacterial genome.






5. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated






6. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes






7. Actin - myosin - and other muscle proteins






8. Recruits RecA protein - inhibited by LexA - results in mutagenesis






9. FAD-2 - NADP-3






10. Cleaves on C terminal side of lysine and arginine






11. Can serve as a primer

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


12. Triglycerides - cholesterols - and phospholipids






13. Donates electrons to form a bond such as N in amines and O in alcohols






14. Acts as a coenzyme in all transamination reactions - and in some decarboxylation and deamination reactions of amino acids. The aldehyde group of PLP forms a Schiff-base linkage (internal aldimine) with the e-amino group of a specific lysine group of






15. Dynins and kinesins (movement) - cilia and flagella






16. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






17. (His - Arg - Lys +) - (Glu - Asp -)






18. Repeated replication w/o cell division






19. Krebs cycle enzyme






20. The most important regulatory enzyme of glycolysis. It is an allosteric enzyme made of 4 subunits and controlled by many activators and inhibitors. PFK-1 catalyzes the important 'committed' step of glycolysis - the conversion of fructose 6-phosphate






21. Serine protease that cleaves on c terminal side of aromatics






22. Catalyzes the irreversible carboxylation of pyruvate to oxaloacetate (OAA).






23. Val - Leu - Ile - Ala - Met






24. Makes Acetyl-CoA from pyruvate






25. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high






26. Possess F factor as a plasmid independent of the bacterial genome. The F plasmid contains only F factor DNA and no DNA from the bacterial genome.






27. Do not contain F factor






28. = pKa+ log(B/A) - -log(Ka)






29. An enzyme that removes a phosphate group from its substrate






30. Phe - Trp - Tyr - Gly - Pro






31. Preferable to hydrolysis (like in the breakdown of glycogen or starch - as in the example above) because glucose 1-phosphate yields more ATP than does free glucose when subsequently catabolized to pyruvate.






32. Irreversible reaction that require ATP first part of glycolosis






33. Enter cells freely






34. Can result in allele differences - suce as 3:1 and 1:3






35. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes






36. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA






37. Nuclear lamins - desmins - keratins - internexins (structure)






38. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades






39. Vitamin B1 - cofactor that aids in dehydrogenase mostly






40. Neutralizes H2O2 - found in lysosomes






41. 1e-14






42. MRNA






43. RNA protein-complex






44. Gprotein association - exchanges GDP to GTP - converts AMP into cyclic AMP. Cyclic AMP binds to protein kinase A: Protein kinase A phosphorylates phosphorylase kinase. increases Ca which binds calmodulin proteins which then binds to phosphorylase kin






45. Gene duplication






46. Operon 1/2 - gene 1/6






47. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane - leading to a rapid consumption of energy without generation of ATP.






48. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes






49. Circular and double stranded






50. Enzymes in Krebs cycle that produce NADH