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






2. Krebs cycle enzyme






3. Ser - Cys - Thr - Gln - Asn






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






5. Vitamin B1 - cofactor that aids in dehydrogenase mostly






6. 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






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






8. Only one carbon center is changed






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






10. Can serve as a primer

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


11. Neutralizes H2O2 - found in lysosomes






12. 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.






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






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






15. Actin - myosin - and other muscle proteins






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






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






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






19. RNA protein-complex






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






21. FAD-2 - NADP-3






22. Val - Leu - Ile - Ala - Met






23. Operon 1/2 - gene 1/6






24. 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






25. Cleaves on C terminal side of lysine and arginine






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






27. 1e-14






28. Can undergo both lytic and lysogenic cycle






29. Gene duplication






30. MRNA






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






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






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






34. Triglycerides - cholesterols - and phospholipids






35. Phe - Trp - Tyr - Gly - Pro






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






37. 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






38. Enter cells freely






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






40. Gene has multiple effects






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






42. PKa = pH






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






44. Derived from golgi vesicles






45. Makes Acetyl-CoA from pyruvate






46. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






47. Failure of chromosome pairs to separate during meiosis






48. 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 -






49. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high






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