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. Triglycerides - cholesterols - and phospholipids






2. Cleaves on C terminal side of lysine and arginine






3. Can serve as a primer


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






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






6. 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.






7. Derived from golgi vesicles






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


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






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






11. Isoelectric point and MW






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






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






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






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






16. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






17. 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






18. Krebs cycle enzyme






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






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






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






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






23. Gene has multiple effects






24. Makes Acetyl-CoA from pyruvate






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






26. 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






27. Val - Leu - Ile - Ala - Met






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






29. Do not contain F factor






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






31. 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.






32. Can undergo both lytic and lysogenic cycle






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






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






35. 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 -






36. Circular and double stranded






37. Measures physical base pair distance






38. PKa = pH






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






40. 1e-14






41. Gene duplication






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






43. 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.






44. RNA protein-complex






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






46. Enzymes in Krebs cycle that produce NADH






47. Enter cells freely






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






49. MRNA






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