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






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






3. Derived from golgi vesicles






4. 1e-14






5. Failure of chromosome pairs to separate during meiosis






6. Enzymes in Krebs cycle that produce NADH






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






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






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






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






11. Repeated replication w/o cell division






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






13. Gene duplication






14. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.






15. 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.






16. Can undergo both lytic and lysogenic cycle






17. Do not contain F factor






18. Ser - Cys - Thr - Gln - Asn






19. RNA protein-complex






20. 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 -






21. FAD-2 - NADP-3






22. 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






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






24. 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.






25. 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






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






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






28. Phe - Trp - Tyr - Gly - Pro






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






30. Vitamin B1 - cofactor that aids in dehydrogenase mostly






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






32. Operon 1/2 - gene 1/6






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






34. Circular and double stranded






35. Gene has multiple effects






36. Enter cells freely






37. Actin - myosin - and other muscle proteins






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






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






40. 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.






41. Cleaves on C terminal side of lysine and arginine






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






43. 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






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






45. Isoelectric point and MW






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






47. PKa = pH






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






49. Krebs cycle enzyme






50. Irreversible reaction that require ATP first part of glycolosis







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests