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






2. Enter cells freely






3. 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.






4. FAD-2 - NADP-3






5. Gene has multiple effects






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






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






8. Gene duplication






9. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






10. 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.






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






12. Ser - Cys - Thr - Gln - Asn






13. 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






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






15. Derived from golgi vesicles






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






17. Phe - Trp - Tyr - Gly - Pro






18. Do not contain F factor






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






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






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






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






23. Measures physical base pair distance






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






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






26. RNA protein-complex






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






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






29. Operon 1/2 - gene 1/6






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






31. Repeated replication w/o cell division






32. MRNA






33. 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.






34. 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






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


36. Cleaves on C terminal side of lysine and arginine






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






38. Actin - myosin - and other muscle proteins






39. Val - Leu - Ile - Ala - Met






40. Only one carbon center is changed






41. Phosphotransferase - is a type of enzyme that transfers phosphate groups from high-energy donor molecules - such as ATP -[2] to specific substrates. The process is referred to as phosphorylation -






42. Non-protein chemical compound that is bound to a protein and is required for the protein'S biological activity






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






44. Triglycerides - cholesterols - and phospholipids






45. Isoelectric point and MW






46. Enzymes in Krebs cycle that produce NADH






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






48. Irreversible reaction that require ATP first part of glycolosis






49. 1e-14






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