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