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Test your basic knowledge |
GRE Biochemistry
Start Test
Study First
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. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
Hfr bacteria
biotin
PFK2
chymotrypsin
2. 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.
cofactors
F+ bacteria
kinase
PFK1
3. Gene has multiple effects
cAMP
pleiotropic
cofactors
northern blot
4. Measures physical base pair distance
kb
intermediate filiments
EF-G
phosphorolysis
5. Cis faces the ER and trans faces the plasma membrane
origin of multi gene families
Signal recognition particle (SRP)
cis and trans golgi network
kb
6. 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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7. 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
kinase
Pyridoxal-phosphate (PLP)
2 -4 DNP
biotin
8. Nuclear lamins - desmins - keratins - internexins (structure)
[B]=[A] - ratio = 1
trypsin
nucleophile
intermediate filiments
9. Irreversible reaction that require ATP first part of glycolosis
temperate bacteriophage
F+ bacteria
Hexokinase and PFK1
FAD and NADP ATP equivalents
10. 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 -
northern blot
PFK1
tyrosine kinase
kinase
11. Neutralizes H2O2 - found in lysosomes
catalase
Charged AAs
northern blot
tyrosine kinase
12. Donates electrons to form a bond such as N in amines and O in alcohols
northern blot
PFK2
aconitase
nucleophile
13. Can serve as a primer
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14. Can undergo both lytic and lysogenic cycle
2D gel electrophoresis
F+ bacteria
EF-G
temperate bacteriophage
15. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
cAMP
epimers
F+ bacteria
tyrosine kinase
16. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
Polytene chromosome
mitochondria
trypsin
centimorgans
17. = pKa+ log(B/A) - -log(Ka)
Charged AAs
pH
PFK1
tyrosine kinase
18. Phe - Trp - Tyr - Gly - Pro
aconitase
Aromatic/Achiral AAs
EF-G
F- bacteria
19. Do not contain F factor
F- bacteria
3' terminal -OH
trypsin
SOS repair
20. Circular and double stranded
Hexokinase and PFK1
northern blot
epimers
mtDNA and chDNA
21. Makes Acetyl-CoA from pyruvate
gene conversion
F- bacteria
euchromatin
pyruvate dehydrogenase
22. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
PEP carboxykinase
PEP carboxylase
Thiamine Pyrophosphate (TPP)
PFK1
23. When exons are arranged in multiple orders after removal of introns
Thiamine Pyrophosphate (TPP)
alternative splicing
Polar AAs
[B]=[A] - ratio = 1
24. Can result in allele differences - suce as 3:1 and 1:3
Polar AAs
F- bacteria
3' terminal -OH
gene conversion
25. Non-protein chemical compound that is bound to a protein and is required for the protein'S biological activity
cofactors
2 -4 DNP
Steroid Hormones
heterochromatin
26. Failure of chromosome pairs to separate during meiosis
euchromatin
Steroid Hormones
phosphorolysis
nondisjunction
27. 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.
PFK1
SRP - signal recognition particle
tyrosine kinase
Hfr bacteria
28. Contain their own DNA - mRNA - and proteins to synthesize more
3' terminal -OH
mitochondria
PEP carboxykinase
Aromatic/Achiral AAs
29. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.
PEP carboxykinase
mitochondria
isocitrate dehydrogenase and a-ketogluterase
F' (F-prime) bacteria
30. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
phosphorolysis
microtubules
origin of multi gene families
euchromatin
31. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
cell plate
Signal recognition particle (SRP)
EF-G
microfiliments
32. 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
F+ bacteria
epinephrine
SRP - signal recognition particle
Signal recognition particle (SRP)
33. Repeated replication w/o cell division
pH
F' (F-prime) bacteria
VLDL
Polytene chromosome
34. Derived from golgi vesicles
cell plate
microfiliments
Signal recognition particle (SRP)
Thiamine Pyrophosphate (TPP)
35. Gene duplication
SRP - signal recognition particle
origin of multi gene families
PEP carboxylase
[A][B]
36. Cleaves on C terminal side of lysine and arginine
trypsin
PEP carboxylase
Signal recognition particle (SRP)
Pyridoxal-phosphate (PLP)
37. Operon 1/2 - gene 1/6
chance of in frame fusion for operon? and gene?
eEF-1 and eEF-2
tyrosine kinase
chymotrypsin
38. Enter cells freely
PEP carboxylase
3' terminal -OH
Steroid Hormones
SRP - signal recognition particle
39. 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.
SOS repair
Pyridoxal-phosphate (PLP)
cell plate
phosphorolysis
40. PKa = pH
[B]=[A] - ratio = 1
Aromatic/Achiral AAs
F- bacteria
Hfr bacteria
41. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane - leading to a rapid consumption of energy without generation of ATP.
temperate bacteriophage
Hfr bacteria
2 -4 DNP
kb
42. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
cAMP
eEF-1 and eEF-2
SOS repair
EF-G
43. Recruits RecA protein - inhibited by LexA - results in mutagenesis
Hexokinase and PFK1
FAD and NADP ATP equivalents
SOS repair
F' (F-prime) bacteria
44. Isoelectric point and MW
tyrosine kinase
cofactors
F+ bacteria
2D gel electrophoresis
45. Catalyzes the irreversible carboxylation of pyruvate to oxaloacetate (OAA).
mtDNA and chDNA
pH
Pyruvate carboxylase
temperate bacteriophage
46. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
euchromatin
biotin
eEF-1 and eEF-2
Aromatic/Achiral AAs
47. Serine protease that cleaves on c terminal side of aromatics
Non Polar AAs
mtDNA and chDNA
2D gel electrophoresis
chymotrypsin
48. Actin - myosin - and other muscle proteins
EF-G
isocitrate dehydrogenase and a-ketogluterase
microfiliments
pyruvate dehydrogenase
49. Vitamin B1 - cofactor that aids in dehydrogenase mostly
centimorgans
Thiamine Pyrophosphate (TPP)
phosphorolysis
3' terminal -OH
50. Triglycerides - cholesterols - and phospholipids
VLDL
kinase
[B]=[A] - ratio = 1
isocitrate dehydrogenase and a-ketogluterase