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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. Val - Leu - Ile - Ala - Met
biotin
euchromatin
Non Polar AAs
Signal recognition particle (SRP)
2. Catalyzes the irreversible carboxylation of pyruvate to oxaloacetate (OAA).
Pyridoxal-phosphate (PLP)
Signal recognition particle (SRP)
Pyruvate carboxylase
SRP - signal recognition particle
3. Repeated replication w/o cell division
tyrosine kinase
Polytene chromosome
Non Polar AAs
alternative splicing
4. Triglycerides - cholesterols - and phospholipids
VLDL
2 -4 DNP
F+ bacteria
F' (F-prime) bacteria
5. MRNA
northern blot
mitochondria
nondisjunction
mtDNA and chDNA
6. Recruits RecA protein - inhibited by LexA - results in mutagenesis
cAMP
SRP - signal recognition particle
SOS repair
origin of multi gene families
7. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
chymotrypsin
[A][B]
northern blot
heterochromatin
8. Vitamin B1 - cofactor that aids in dehydrogenase mostly
intermediate filiments
EF-G
Thiamine Pyrophosphate (TPP)
catalase
9. An enzyme that removes a phosphate group from its substrate
tyrosine kinase
microfiliments
phosphatase
2 -4 DNP
10. Cleaves on C terminal side of lysine and arginine
VLDL
phosphorolysis
3' terminal -OH
trypsin
11. Can result in allele differences - suce as 3:1 and 1:3
epimers
euchromatin
SOS repair
gene conversion
12. 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
nucleophile
chance of in frame fusion for operon? and gene?
Charged AAs
Pyridoxal-phosphate (PLP)
13. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
VLDL
heterochromatin
biotin
chance of in frame fusion for operon? and gene?
14. Can undergo both lytic and lysogenic cycle
PFK2
temperate bacteriophage
PEP carboxykinase
pleiotropic
15. Serine protease that cleaves on c terminal side of aromatics
Polar AAs
pyruvate dehydrogenase
chymotrypsin
PFK2
16. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
isocitrate dehydrogenase and a-ketogluterase
pyruvate dehydrogenase
PEP carboxylase
epimers
17. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
2D gel electrophoresis
cofactors
euchromatin
F' (F-prime) bacteria
18. Ser - Cys - Thr - Gln - Asn
catalase
Signal recognition particle (SRP)
Polar AAs
cell plate
19. Donates electrons to form a bond such as N in amines and O in alcohols
epinephrine
nucleophile
catalase
chymotrypsin
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 -
centimorgans
2D gel electrophoresis
euchromatin
kinase
21. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
F- bacteria
PEP carboxykinase
[A][B]
centimorgans
22. Acetyl-CoA to malonyl-CoA - rate limiting step in fatty acid synthesis
PEP carboxykinase
euchromatin
cis and trans golgi network
Acetyl-CoA carboxylase
23. Failure of chromosome pairs to separate during meiosis
F+ bacteria
trypsin
tyrosine kinase
nondisjunction
24. (His - Arg - Lys +) - (Glu - Asp -)
phosphatase
Polytene chromosome
Pyruvate carboxylase
Charged AAs
25. Enter cells freely
Steroid Hormones
pH
epinephrine
[A][B]
26. 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
epinephrine
phosphorolysis
VLDL
alternative splicing
27. FAD-2 - NADP-3
PEP carboxylase
F' (F-prime) bacteria
FAD and NADP ATP equivalents
2D gel electrophoresis
28. Non-protein chemical compound that is bound to a protein and is required for the protein'S biological activity
PEP carboxylase
Polar AAs
cofactors
Aromatic/Achiral AAs
29. Gene has multiple effects
Aromatic/Achiral AAs
pleiotropic
cell plate
Polytene chromosome
30. Only one carbon center is changed
epimers
cofactors
microtubules
microfiliments
31. Nuclear lamins - desmins - keratins - internexins (structure)
epinephrine
Steroid Hormones
tyrosine kinase
intermediate filiments
32. 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.
mtDNA and chDNA
catalase
Hfr bacteria
tyrosine kinase
33. 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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34. Derived from golgi vesicles
Hfr bacteria
Aromatic/Achiral AAs
Hexokinase and PFK1
cell plate
35. Actin - myosin - and other muscle proteins
PEP carboxylase
epimers
microfiliments
cofactors
36. RNA protein-complex
Non Polar AAs
SRP - signal recognition particle
pyruvate dehydrogenase
catalase
37. Krebs cycle enzyme
isocitrate dehydrogenase and a-ketogluterase
Pyridoxal-phosphate (PLP)
catalase
aconitase
38. 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.
PFK1
F+ bacteria
phosphatase
Hfr bacteria
39. Can serve as a primer
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40. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
kinase
intermediate filiments
microtubules
tyrosine kinase
41. PKa = pH
[B]=[A] - ratio = 1
PFK2
northern blot
2D gel electrophoresis
42. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
euchromatin
2 -4 DNP
EF-G
eEF-1 and eEF-2
43. Isoelectric point and MW
trypsin
2D gel electrophoresis
heterochromatin
eEF-1 and eEF-2
44. Gene duplication
origin of multi gene families
Pyruvate carboxylase
[A][B]
EF-G
45. 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
biotin
[B]=[A] - ratio = 1
PFK1
northern blot
46. Circular and double stranded
PFK1
microfiliments
[A][B]
mtDNA and chDNA
47. Makes Acetyl-CoA from pyruvate
centimorgans
chance of in frame fusion for operon? and gene?
cell plate
pyruvate dehydrogenase
48. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
origin of multi gene families
3' terminal -OH
eEF-1 and eEF-2
Acetyl-CoA carboxylase
49. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
cAMP
kinase
Signal recognition particle (SRP)
chymotrypsin
50. Irreversible reaction that require ATP first part of glycolosis
epimers
Hexokinase and PFK1
alternative splicing
PFK1