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GRE Biochemistry

Subjects : gre, science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. Contain their own DNA - mRNA - and proteins to synthesize more






2. Val - Leu - Ile - Ala - Met






3. Isoelectric point and MW






4. Ser - Cys - Thr - Gln - Asn






5. Measures physical base pair distance






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. Irreversible reaction that require ATP first part of glycolosis






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






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






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






11. Makes Acetyl-CoA from pyruvate






12. Can serve as a primer

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13. Only one carbon center is changed






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






15. 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 -






16. Neutralizes H2O2 - found in lysosomes






17. Can undergo both lytic and lysogenic cycle






18. Gene has multiple effects






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






20. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






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






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






23. Enter cells freely






24. Enzymes in Krebs cycle that produce NADH






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






26. MRNA






27. Phe - Trp - Tyr - Gly - Pro






28. Krebs cycle enzyme






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






30. Triglycerides - cholesterols - and phospholipids






31. Operon 1/2 - gene 1/6






32. Actin - myosin - and other muscle proteins






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






34. PKa = pH






35. 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.






36. Derived from golgi vesicles






37. Failure of chromosome pairs to separate during meiosis






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






39. 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






40. 1e-14






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






42. FAD-2 - NADP-3






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






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






45. Circular and double stranded






46. 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.






47. RNA protein-complex






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






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






50. Cleaves on C terminal side of lysine and arginine