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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. Cis faces the ER and trans faces the plasma membrane
nucleophile
cis and trans golgi network
chance of in frame fusion for operon? and gene?
euchromatin
2. Can result in allele differences - suce as 3:1 and 1:3
2D gel electrophoresis
Polytene chromosome
gene conversion
[B]=[A] - ratio = 1
3. An enzyme that removes a phosphate group from its substrate
phosphatase
microfiliments
Signal recognition particle (SRP)
Charged AAs
4. Dynins and kinesins (movement) - cilia and flagella
pleiotropic
F' (F-prime) bacteria
microtubules
Charged AAs
5. Irreversible reaction that require ATP first part of glycolosis
Hexokinase and PFK1
epimers
catalase
Steroid Hormones
6. RNA protein-complex
epimers
catalase
nondisjunction
SRP - signal recognition particle
7. Isoelectric point and MW
3' terminal -OH
2D gel electrophoresis
alternative splicing
Polar AAs
8. Enter cells freely
F' (F-prime) bacteria
chance of in frame fusion for operon? and gene?
pleiotropic
Steroid Hormones
9. Derived from golgi vesicles
SOS repair
biotin
cell plate
Charged AAs
10. Gene has multiple effects
PFK1
pleiotropic
F+ bacteria
cell plate
11. Gene duplication
intermediate filiments
chymotrypsin
catalase
origin of multi gene families
12. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
microfiliments
chance of in frame fusion for operon? and gene?
Non Polar AAs
biotin
13. Contain their own DNA - mRNA - and proteins to synthesize more
mitochondria
Steroid Hormones
cell plate
chance of in frame fusion for operon? and gene?
14. 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
PFK1
Pyridoxal-phosphate (PLP)
phosphorolysis
nondisjunction
15. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high
PFK2
heterochromatin
Hexokinase and PFK1
origin of multi gene families
16. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.
chance of in frame fusion for operon? and gene?
Hexokinase and PFK1
PEP carboxykinase
euchromatin
17. Val - Leu - Ile - Ala - Met
kb
Signal recognition particle (SRP)
Aromatic/Achiral AAs
Non Polar AAs
18. Serine protease that cleaves on c terminal side of aromatics
chymotrypsin
epimers
Charged AAs
chance of in frame fusion for operon? and gene?
19. 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.
VLDL
[B]=[A] - ratio = 1
phosphorolysis
microfiliments
20. PKa = pH
F+ bacteria
3' terminal -OH
[B]=[A] - ratio = 1
F' (F-prime) bacteria
21. Circular and double stranded
microfiliments
mtDNA and chDNA
tyrosine kinase
PFK1
22. Actin - myosin - and other muscle proteins
cAMP
alternative splicing
microfiliments
Acetyl-CoA carboxylase
23. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
Pyruvate carboxylase
3' terminal -OH
nucleophile
euchromatin
24. Neutralizes H2O2 - found in lysosomes
catalase
biotin
kinase
temperate bacteriophage
25. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
intermediate filiments
Polytene chromosome
epimers
heterochromatin
26. Repeated replication w/o cell division
phosphorolysis
Polytene chromosome
epinephrine
epimers
27. Only one carbon center is changed
epimers
mitochondria
cell plate
PFK2
28. Acetyl-CoA to malonyl-CoA - rate limiting step in fatty acid synthesis
Acetyl-CoA carboxylase
kinase
aconitase
Pyruvate carboxylase
29. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
[A][B]
phosphatase
eEF-1 and eEF-2
pleiotropic
30. Makes Acetyl-CoA from pyruvate
PEP carboxykinase
pyruvate dehydrogenase
Pyruvate carboxylase
F- bacteria
31. When exons are arranged in multiple orders after removal of introns
Hfr bacteria
eEF-1 and eEF-2
kb
alternative splicing
32. Failure of chromosome pairs to separate during meiosis
aconitase
cell plate
F- bacteria
nondisjunction
33. 1e-14
pH
kb
chymotrypsin
[A][B]
34. Measures physical base pair distance
Steroid Hormones
kb
Pyridoxal-phosphate (PLP)
microfiliments
35. Can serve as a primer
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183
36. Nuclear lamins - desmins - keratins - internexins (structure)
PFK1
aconitase
Pyruvate carboxylase
intermediate filiments
37. Donates electrons to form a bond such as N in amines and O in alcohols
gene conversion
nucleophile
VLDL
EF-G
38. Krebs cycle enzyme
origin of multi gene families
cAMP
centimorgans
aconitase
39. Operon 1/2 - gene 1/6
pyruvate dehydrogenase
chance of in frame fusion for operon? and gene?
trypsin
F' (F-prime) bacteria
40. Phe - Trp - Tyr - Gly - Pro
Aromatic/Achiral AAs
PFK1
mtDNA and chDNA
EF-G
41. = pKa+ log(B/A) - -log(Ka)
VLDL
cell plate
pH
F' (F-prime) bacteria
42. Recruits RecA protein - inhibited by LexA - results in mutagenesis
FAD and NADP ATP equivalents
kinase
SOS repair
chance of in frame fusion for operon? and gene?
43. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
Signal recognition particle (SRP)
heterochromatin
biotin
PEP carboxylase
44. Can undergo both lytic and lysogenic cycle
temperate bacteriophage
Hfr bacteria
2D gel electrophoresis
cis and trans golgi network
45. Enzymes in Krebs cycle that produce NADH
PEP carboxylase
isocitrate dehydrogenase and a-ketogluterase
alternative splicing
epinephrine
46. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
tyrosine kinase
northern blot
centimorgans
mitochondria
47. Ser - Cys - Thr - Gln - Asn
centimorgans
Polar AAs
EF-G
kb
48. Triglycerides - cholesterols - and phospholipids
Hexokinase and PFK1
VLDL
F' (F-prime) bacteria
Aromatic/Achiral AAs
49. Cleaves on C terminal side of lysine and arginine
Aromatic/Achiral AAs
2D gel electrophoresis
trypsin
VLDL
50. FAD-2 - NADP-3
centimorgans
cAMP
FAD and NADP ATP equivalents
pyruvate dehydrogenase