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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. Circular and double stranded






2. Actin - myosin - and other muscle proteins






3. Krebs cycle enzyme






4. Cleaves on C terminal side of lysine and arginine






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






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






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






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






9. Derived from golgi vesicles






10. 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






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






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






13. Enzymes in Krebs cycle that produce NADH






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






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






16. Vitamin B1 - cofactor that aids in dehydrogenase mostly






17. Makes Acetyl-CoA from pyruvate






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






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






20. Gene duplication






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






22. 1e-14






23. RNA protein-complex






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






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






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






27. 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






28. Ser - Cys - Thr - Gln - Asn






29. Triglycerides - cholesterols - and phospholipids






30. Measures physical base pair distance






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






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






33. Isoelectric point and MW






34. Failure of chromosome pairs to separate during meiosis






35. Phe - Trp - Tyr - Gly - Pro






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






37. Can undergo both lytic and lysogenic cycle






38. Operon 1/2 - gene 1/6






39. Can serve as a primer

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40. Repeated replication w/o cell division






41. 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.






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






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






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






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






46. 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.






47. Do not contain F factor






48. 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






49. FAD-2 - NADP-3






50. Gene has multiple effects