SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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
pyruvate dehydrogenase
origin of multi gene families
mitochondria
eEF-1 and eEF-2
2. Enter cells freely
Steroid Hormones
intermediate filiments
Charged AAs
2 -4 DNP
3. 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.
nondisjunction
Aromatic/Achiral AAs
Hfr bacteria
intermediate filiments
4. FAD-2 - NADP-3
Hfr bacteria
microtubules
chance of in frame fusion for operon? and gene?
FAD and NADP ATP equivalents
5. Gene has multiple effects
pleiotropic
2 -4 DNP
PEP carboxykinase
heterochromatin
6. Recruits RecA protein - inhibited by LexA - results in mutagenesis
VLDL
microfiliments
Pyruvate carboxylase
SOS repair
7. Dynins and kinesins (movement) - cilia and flagella
microtubules
epinephrine
Hfr bacteria
Polar AAs
8. Gene duplication
intermediate filiments
cAMP
catalase
origin of multi gene families
9. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.
epinephrine
PEP carboxykinase
SRP - signal recognition particle
F+ bacteria
10. 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.
Thiamine Pyrophosphate (TPP)
nondisjunction
Hfr bacteria
F+ bacteria
11. Serine protease that cleaves on c terminal side of aromatics
[B]=[A] - ratio = 1
chymotrypsin
Hexokinase and PFK1
kb
12. Ser - Cys - Thr - Gln - Asn
heterochromatin
Polar AAs
VLDL
2D gel electrophoresis
13. 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
3' terminal -OH
cAMP
2 -4 DNP
cofactors
14. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
centimorgans
temperate bacteriophage
cofactors
cis and trans golgi network
15. Derived from golgi vesicles
pyruvate dehydrogenase
PFK1
Pyridoxal-phosphate (PLP)
cell plate
16. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
mitochondria
epimers
EF-G
centimorgans
17. Phe - Trp - Tyr - Gly - Pro
SRP - signal recognition particle
Aromatic/Achiral AAs
Steroid Hormones
F- bacteria
18. Do not contain F factor
phosphorolysis
F- bacteria
Pyridoxal-phosphate (PLP)
aconitase
19. An enzyme that removes a phosphate group from its substrate
phosphatase
PEP carboxylase
mtDNA and chDNA
phosphorolysis
20. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
isocitrate dehydrogenase and a-ketogluterase
alternative splicing
phosphatase
PEP carboxylase
21. Can result in allele differences - suce as 3:1 and 1:3
2 -4 DNP
gene conversion
cis and trans golgi network
nondisjunction
22. 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
pH
FAD and NADP ATP equivalents
23. Measures physical base pair distance
kb
microtubules
[B]=[A] - ratio = 1
intermediate filiments
24. Contain their own DNA - mRNA - and proteins to synthesize more
Hfr bacteria
nondisjunction
mitochondria
Polytene chromosome
25. (His - Arg - Lys +) - (Glu - Asp -)
aconitase
cis and trans golgi network
isocitrate dehydrogenase and a-ketogluterase
Charged AAs
26. RNA protein-complex
kinase
SRP - signal recognition particle
phosphorolysis
EF-G
27. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
epinephrine
pH
heterochromatin
VLDL
28. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
tyrosine kinase
cell plate
Steroid Hormones
Hfr bacteria
29. Operon 1/2 - gene 1/6
chance of in frame fusion for operon? and gene?
[A][B]
isocitrate dehydrogenase and a-ketogluterase
northern blot
30. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high
Acetyl-CoA carboxylase
FAD and NADP ATP equivalents
PFK2
Charged AAs
31. Repeated replication w/o cell division
SOS repair
microfiliments
Acetyl-CoA carboxylase
Polytene chromosome
32. MRNA
EF-G
SOS repair
[A][B]
northern blot
33. 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.
epimers
phosphorolysis
Thiamine Pyrophosphate (TPP)
pleiotropic
34. 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
Pyridoxal-phosphate (PLP)
Aromatic/Achiral AAs
Polytene chromosome
PFK1
35. Possess an F plasmid that also includes some DNA taken from the bacterial genome. Sometimes it is formed by incorrect excision from the chromosome
36. Cleaves on C terminal side of lysine and arginine
pleiotropic
gene conversion
tyrosine kinase
trypsin
37. Nuclear lamins - desmins - keratins - internexins (structure)
northern blot
intermediate filiments
nucleophile
2 -4 DNP
38. Actin - myosin - and other muscle proteins
PFK1
cAMP
microfiliments
temperate bacteriophage
39. Val - Leu - Ile - Ala - Met
trypsin
aconitase
Non Polar AAs
Hexokinase and PFK1
40. Only one carbon center is changed
Non Polar AAs
epimers
cell plate
microfiliments
41. 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 -
Pyridoxal-phosphate (PLP)
kinase
Polytene chromosome
cis and trans golgi network
42. Non-protein chemical compound that is bound to a protein and is required for the protein'S biological activity
cAMP
FAD and NADP ATP equivalents
microtubules
cofactors
43. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
eEF-1 and eEF-2
euchromatin
microfiliments
2D gel electrophoresis
44. Triglycerides - cholesterols - and phospholipids
PFK1
VLDL
microtubules
Charged AAs
45. Isoelectric point and MW
Acetyl-CoA carboxylase
FAD and NADP ATP equivalents
2D gel electrophoresis
kb
46. Enzymes in Krebs cycle that produce NADH
Acetyl-CoA carboxylase
isocitrate dehydrogenase and a-ketogluterase
kb
F- bacteria
47. Acetyl-CoA to malonyl-CoA - rate limiting step in fatty acid synthesis
mtDNA and chDNA
chance of in frame fusion for operon? and gene?
pyruvate dehydrogenase
Acetyl-CoA carboxylase
48. Irreversible reaction that require ATP first part of glycolosis
PEP carboxylase
Hexokinase and PFK1
Pyruvate carboxylase
cis and trans golgi network
49. 1e-14
[A][B]
euchromatin
mtDNA and chDNA
Hfr bacteria
50. When exons are arranged in multiple orders after removal of introns
phosphatase
VLDL
alternative splicing
epinephrine