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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.
  • 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. Irreversible reaction that require ATP first part of glycolosis






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






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






5. 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.






6. Gene duplication






7. Actin - myosin - and other muscle proteins






8. Val - Leu - Ile - Ala - Met






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






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






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






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






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






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






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






16. Isoelectric point and MW






17. Failure of chromosome pairs to separate during meiosis






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. Do not contain F factor






20. Can serve as a primer

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






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






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






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






25. Triglycerides - cholesterols - and phospholipids






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






27. 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 -






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






29. Circular and double stranded






30. Enzymes in Krebs cycle that produce NADH






31. Gene has multiple effects






32. Repeated replication w/o cell division






33. Ser - Cys - Thr - Gln - Asn






34. Operon 1/2 - gene 1/6






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






36. Derived from golgi vesicles






37. 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.






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






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






40. Measures physical base pair distance






41. MRNA






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






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






44. Cleaves on C terminal side of lysine and arginine






45. Makes Acetyl-CoA from pyruvate






46. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






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






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

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49. PKa = pH






50. Can undergo both lytic and lysogenic cycle