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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. Non-protein chemical compound that is bound to a protein and is required for the protein'S biological activity
cofactors
F- bacteria
chymotrypsin
Pyruvate carboxylase
2. 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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3. Derived from golgi vesicles
Hfr bacteria
Hexokinase and PFK1
cell plate
[A][B]
4. Circular and double stranded
mtDNA and chDNA
catalase
cell plate
temperate bacteriophage
5. Measures physical base pair distance
microtubules
microfiliments
isocitrate dehydrogenase and a-ketogluterase
kb
6. Cis faces the ER and trans faces the plasma membrane
cis and trans golgi network
3' terminal -OH
Polar AAs
microfiliments
7. When exons are arranged in multiple orders after removal of introns
aconitase
alternative splicing
Hfr bacteria
cis and trans golgi network
8. Can result in allele differences - suce as 3:1 and 1:3
isocitrate dehydrogenase and a-ketogluterase
temperate bacteriophage
pH
gene conversion
9. Cleaves on C terminal side of lysine and arginine
trypsin
nucleophile
2 -4 DNP
northern blot
10. Krebs cycle enzyme
microtubules
eEF-1 and eEF-2
aconitase
temperate bacteriophage
11. Nuclear lamins - desmins - keratins - internexins (structure)
intermediate filiments
2 -4 DNP
aconitase
F' (F-prime) bacteria
12. (His - Arg - Lys +) - (Glu - Asp -)
Charged AAs
2 -4 DNP
EF-G
gene conversion
13. Gene has multiple effects
[B]=[A] - ratio = 1
SRP - signal recognition particle
cAMP
pleiotropic
14. MRNA
EF-G
2 -4 DNP
phosphorolysis
northern blot
15. Only one carbon center is changed
[B]=[A] - ratio = 1
2 -4 DNP
epimers
nondisjunction
16. Neutralizes H2O2 - found in lysosomes
SRP - signal recognition particle
cell plate
tyrosine kinase
catalase
17. Gene duplication
catalase
northern blot
origin of multi gene families
cis and trans golgi network
18. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.
nondisjunction
PEP carboxykinase
Thiamine Pyrophosphate (TPP)
[B]=[A] - ratio = 1
19. Recruits RecA protein - inhibited by LexA - results in mutagenesis
VLDL
Steroid Hormones
SOS repair
nucleophile
20. Triglycerides - cholesterols - and phospholipids
PFK1
VLDL
kinase
F- bacteria
21. PKa = pH
northern blot
FAD and NADP ATP equivalents
[B]=[A] - ratio = 1
Polar AAs
22. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
phosphatase
F' (F-prime) bacteria
kb
euchromatin
23. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
Signal recognition particle (SRP)
phosphorolysis
PEP carboxylase
EF-G
24. Isoelectric point and MW
2D gel electrophoresis
chymotrypsin
mitochondria
cAMP
25. Operon 1/2 - gene 1/6
chance of in frame fusion for operon? and gene?
Hexokinase and PFK1
intermediate filiments
alternative splicing
26. Can serve as a primer
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27. Failure of chromosome pairs to separate during meiosis
cis and trans golgi network
nondisjunction
F- bacteria
chance of in frame fusion for operon? and gene?
28. RNA protein-complex
pleiotropic
SRP - signal recognition particle
2 -4 DNP
Steroid Hormones
29. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane - leading to a rapid consumption of energy without generation of ATP.
phosphatase
2 -4 DNP
PFK2
cofactors
30. Catalyzes the irreversible carboxylation of pyruvate to oxaloacetate (OAA).
Pyruvate carboxylase
mitochondria
cofactors
cis and trans golgi network
31. Ser - Cys - Thr - Gln - Asn
trypsin
Polar AAs
heterochromatin
chance of in frame fusion for operon? and gene?
32. 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.
mtDNA and chDNA
Polar AAs
cell plate
F+ bacteria
33. An enzyme that removes a phosphate group from its substrate
phosphatase
isocitrate dehydrogenase and a-ketogluterase
PFK2
aconitase
34. Serine protease that cleaves on c terminal side of aromatics
chymotrypsin
F' (F-prime) bacteria
gene conversion
biotin
35. Actin - myosin - and other muscle proteins
Thiamine Pyrophosphate (TPP)
microfiliments
SOS repair
eEF-1 and eEF-2
36. Makes Acetyl-CoA from pyruvate
pyruvate dehydrogenase
epimers
heterochromatin
EF-G
37. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high
PFK1
PFK2
nondisjunction
PEP carboxykinase
38. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
eEF-1 and eEF-2
VLDL
heterochromatin
catalase
39. 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 -
kinase
cofactors
alternative splicing
FAD and NADP ATP equivalents
40. Dynins and kinesins (movement) - cilia and flagella
Hfr bacteria
Pyruvate carboxylase
microtubules
cAMP
41. = pKa+ log(B/A) - -log(Ka)
Thiamine Pyrophosphate (TPP)
pH
cAMP
[A][B]
42. 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
PFK1
Pyruvate carboxylase
F+ bacteria
tyrosine kinase
43. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
pH
Charged AAs
pyruvate dehydrogenase
tyrosine kinase
44. 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
gene conversion
eEF-1 and eEF-2
epinephrine
Signal recognition particle (SRP)
45. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
northern blot
PEP carboxylase
Pyruvate carboxylase
microtubules
46. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
nondisjunction
centimorgans
trypsin
[A][B]
47. Can undergo both lytic and lysogenic cycle
F- bacteria
Polar AAs
temperate bacteriophage
pH
48. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
cis and trans golgi network
alternative splicing
Acetyl-CoA carboxylase
Signal recognition particle (SRP)
49. Val - Leu - Ile - Ala - Met
Non Polar AAs
trypsin
FAD and NADP ATP equivalents
cis and trans golgi network
50. Do not contain F factor
Steroid Hormones
euchromatin
F- bacteria
2 -4 DNP