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






2. Phe - Trp - Tyr - Gly - Pro






3. Vitamin B1 - cofactor that aids in dehydrogenase mostly






4. Enzymes in Krebs cycle that produce NADH






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






6. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate






7. Gene duplication






8. MRNA






9. Can serve as a primer

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


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






11. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






12. Krebs cycle enzyme






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






14. 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.






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






16. Possess an F plasmid that also includes some DNA taken from the bacterial genome. Sometimes it is formed by incorrect excision from the chromosome

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


17. Isoelectric point and MW






18. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)






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






20. 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.






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






22. Cis faces the ER and trans faces the plasma membrane






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






24. Acetyl-CoA to malonyl-CoA - rate limiting step in fatty acid synthesis






25. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation






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






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






28. 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






29. Ser - Cys - Thr - Gln - Asn






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






31. When exons are arranged in multiple orders after removal of introns






32. 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.






33. Circular and double stranded






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






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






36. Irreversible reaction that require ATP first part of glycolosis






37. Secondary messenger - used for intracellular signal transduction - such as transferring the effects of hormones like glucagon and adrenaline - which cannot pass through the cell membrane. It is involved in the activation of protein kinases and regula






38. Measures physical base pair distance






39. Failure of chromosome pairs to separate during meiosis






40. 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






41. 1e-14






42. Do not contain F factor






43. PKa = pH






44. Operon 1/2 - gene 1/6






45. Triglycerides - cholesterols - and phospholipids






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






47. Neutralizes H2O2 - found in lysosomes






48. RNA protein-complex






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






50. Repeated replication w/o cell division