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. Actin - myosin - and other muscle proteins






2. Only one carbon center is changed






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






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






5. Makes Acetyl-CoA from pyruvate






6. Gene has multiple effects






7. Failure of chromosome pairs to separate during meiosis






8. Krebs cycle enzyme






9. Triglycerides - cholesterols - and phospholipids






10. Enter cells freely






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






12. Vitamin B1 - cofactor that aids in dehydrogenase mostly






13. 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.






14. 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






15. Repeated replication w/o cell division






16. Can serve as a primer


17. Irreversible reaction that require ATP first part of glycolosis






18. 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






19. Ser - Cys - Thr - Gln - Asn






20. Do not contain F factor






21. 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






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






23. 1e-14






24. Enzymes in Krebs cycle that produce NADH






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






26. Can undergo both lytic and lysogenic cycle






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






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






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






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






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






32. FAD-2 - NADP-3






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






34. Isoelectric point and MW






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






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






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






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






39. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






40. Gene duplication






41. RNA protein-complex






42. 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 -






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






44. MRNA






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






46. Phe - Trp - Tyr - Gly - Pro






47. Cleaves on C terminal side of lysine and arginine






48. 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.






49. Derived from golgi vesicles






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