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Test your basic knowledge |
GRE Biochemistry
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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. Isoelectric point and MW
pH
F+ bacteria
F- bacteria
2D gel electrophoresis
2. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
Signal recognition particle (SRP)
epimers
mtDNA and chDNA
cis and trans golgi network
3. 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.
phosphorolysis
epinephrine
F- bacteria
Charged AAs
4. Measures physical base pair distance
biotin
alternative splicing
heterochromatin
kb
5. MRNA
northern blot
origin of multi gene families
trypsin
aconitase
6. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
mtDNA and chDNA
PEP carboxylase
eEF-1 and eEF-2
epinephrine
7. Recruits RecA protein - inhibited by LexA - results in mutagenesis
F- bacteria
mtDNA and chDNA
epimers
SOS repair
8. Catalyzes the irreversible carboxylation of pyruvate to oxaloacetate (OAA).
Pyruvate carboxylase
2D gel electrophoresis
pH
kinase
9. Cleaves on C terminal side of lysine and arginine
trypsin
aconitase
temperate bacteriophage
Aromatic/Achiral AAs
10. Enzymes in Krebs cycle that produce NADH
microfiliments
F' (F-prime) bacteria
isocitrate dehydrogenase and a-ketogluterase
heterochromatin
11. Derived from golgi vesicles
epinephrine
chance of in frame fusion for operon? and gene?
cell plate
mtDNA and chDNA
12. Do not contain F factor
F' (F-prime) bacteria
kinase
F- bacteria
gene conversion
13. Dynins and kinesins (movement) - cilia and flagella
microtubules
phosphorolysis
Steroid Hormones
pleiotropic
14. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
chymotrypsin
[A][B]
tyrosine kinase
Hfr bacteria
15. Enter cells freely
Pyruvate carboxylase
Steroid Hormones
Thiamine Pyrophosphate (TPP)
heterochromatin
16. FAD-2 - NADP-3
microtubules
FAD and NADP ATP equivalents
Hexokinase and PFK1
cell plate
17. When exons are arranged in multiple orders after removal of introns
pyruvate dehydrogenase
PFK2
cell plate
alternative splicing
18. 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.
Hfr bacteria
microtubules
centimorgans
isocitrate dehydrogenase and a-ketogluterase
19. Actin - myosin - and other muscle proteins
[B]=[A] - ratio = 1
isocitrate dehydrogenase and a-ketogluterase
microfiliments
epimers
20. Gene duplication
pH
origin of multi gene families
Signal recognition particle (SRP)
F+ bacteria
21. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
heterochromatin
cAMP
origin of multi gene families
Acetyl-CoA carboxylase
22. Acetyl-CoA to malonyl-CoA - rate limiting step in fatty acid synthesis
trypsin
EF-G
Acetyl-CoA carboxylase
origin of multi gene families
23. PKa = pH
euchromatin
cell plate
northern blot
[B]=[A] - ratio = 1
24. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
alternative splicing
microfiliments
EF-G
Non Polar AAs
25. 1e-14
chymotrypsin
[A][B]
tyrosine kinase
PFK1
26. Irreversible reaction that require ATP first part of glycolosis
nondisjunction
microtubules
kinase
Hexokinase and PFK1
27. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
eEF-1 and eEF-2
chance of in frame fusion for operon? and gene?
nondisjunction
PEP carboxylase
28. 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.
microfiliments
Hfr bacteria
F+ bacteria
heterochromatin
29. Can serve as a primer
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30. Repeated replication w/o cell division
Non Polar AAs
PEP carboxylase
alternative splicing
Polytene chromosome
31. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
3' terminal -OH
cAMP
euchromatin
nucleophile
32. 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
cAMP
SRP - signal recognition particle
phosphatase
chymotrypsin
33. Ser - Cys - Thr - Gln - Asn
cis and trans golgi network
Polar AAs
2 -4 DNP
mtDNA and chDNA
34. Nuclear lamins - desmins - keratins - internexins (structure)
intermediate filiments
isocitrate dehydrogenase and a-ketogluterase
trypsin
Pyridoxal-phosphate (PLP)
35. Circular and double stranded
pleiotropic
[A][B]
mtDNA and chDNA
temperate bacteriophage
36. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
biotin
mtDNA and chDNA
epinephrine
euchromatin
37. Cis faces the ER and trans faces the plasma membrane
Pyruvate carboxylase
intermediate filiments
mtDNA and chDNA
cis and trans golgi network
38. Serine protease that cleaves on c terminal side of aromatics
Acetyl-CoA carboxylase
F' (F-prime) bacteria
pleiotropic
chymotrypsin
39. Donates electrons to form a bond such as N in amines and O in alcohols
nucleophile
phosphorolysis
epimers
microtubules
40. Gene has multiple effects
pleiotropic
[A][B]
Acetyl-CoA carboxylase
epinephrine
41. Failure of chromosome pairs to separate during meiosis
Hexokinase and PFK1
phosphorolysis
intermediate filiments
nondisjunction
42. 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
aconitase
epinephrine
[B]=[A] - ratio = 1
epimers
43. Phe - Trp - Tyr - Gly - Pro
Aromatic/Achiral AAs
euchromatin
cofactors
chymotrypsin
44. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high
eEF-1 and eEF-2
PFK2
SOS repair
kinase
45. An enzyme that removes a phosphate group from its substrate
3' terminal -OH
phosphatase
Hexokinase and PFK1
microfiliments
46. Neutralizes H2O2 - found in lysosomes
microfiliments
catalase
Polytene chromosome
SRP - signal recognition particle
47. Can result in allele differences - suce as 3:1 and 1:3
gene conversion
temperate bacteriophage
nucleophile
Acetyl-CoA carboxylase
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. Contain their own DNA - mRNA - and proteins to synthesize more
mitochondria
epimers
phosphatase
biotin
50. Operon 1/2 - gene 1/6
Charged AAs
Non Polar AAs
Pyruvate carboxylase
chance of in frame fusion for operon? and gene?
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