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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. Measures physical base pair distance
Non Polar AAs
kb
pH
mtDNA and chDNA
2. Ser - Cys - Thr - Gln - Asn
heterochromatin
Polar AAs
intermediate filiments
origin of multi gene families
3. Cis faces the ER and trans faces the plasma membrane
PFK1
microtubules
northern blot
cis and trans golgi network
4. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
biotin
Hfr bacteria
EF-G
cAMP
5. Non-protein chemical compound that is bound to a protein and is required for the protein'S biological activity
microfiliments
alternative splicing
cofactors
3' terminal -OH
6. Failure of chromosome pairs to separate during meiosis
3' terminal -OH
tyrosine kinase
PFK2
nondisjunction
7. Enter cells freely
Polytene chromosome
Steroid Hormones
Hexokinase and PFK1
PFK1
8. Derived from golgi vesicles
cAMP
cell plate
Non Polar AAs
trypsin
9. Operon 1/2 - gene 1/6
chance of in frame fusion for operon? and gene?
northern blot
kinase
cAMP
10. Irreversible reaction that require ATP first part of glycolosis
FAD and NADP ATP equivalents
PFK2
Hexokinase and PFK1
Thiamine Pyrophosphate (TPP)
11. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.
Charged AAs
VLDL
isocitrate dehydrogenase and a-ketogluterase
PEP carboxykinase
12. 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 -
Steroid Hormones
F' (F-prime) bacteria
kb
kinase
13. Phe - Trp - Tyr - Gly - Pro
centimorgans
Polytene chromosome
Aromatic/Achiral AAs
Charged AAs
14. Repeated replication w/o cell division
Polytene chromosome
pyruvate dehydrogenase
centimorgans
pleiotropic
15. = pKa+ log(B/A) - -log(Ka)
temperate bacteriophage
pH
phosphatase
biotin
16. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
eEF-1 and eEF-2
cAMP
intermediate filiments
PEP carboxylase
17. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
pyruvate dehydrogenase
Signal recognition particle (SRP)
Hexokinase and PFK1
chymotrypsin
18. MRNA
temperate bacteriophage
mitochondria
gene conversion
northern blot
19. 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.
tyrosine kinase
trypsin
Hfr bacteria
chance of in frame fusion for operon? and gene?
20. Triglycerides - cholesterols - and phospholipids
PFK2
[B]=[A] - ratio = 1
VLDL
PFK1
21. FAD-2 - NADP-3
PEP carboxykinase
FAD and NADP ATP equivalents
pleiotropic
Aromatic/Achiral AAs
22. Can serve as a primer
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23. 1e-14
[A][B]
cAMP
Polar AAs
Non Polar AAs
24. Do not contain F factor
temperate bacteriophage
eEF-1 and eEF-2
F- bacteria
Hfr bacteria
25. Neutralizes H2O2 - found in lysosomes
catalase
chymotrypsin
pleiotropic
Hexokinase and PFK1
26. Enzymes in Krebs cycle that produce NADH
temperate bacteriophage
[B]=[A] - ratio = 1
isocitrate dehydrogenase and a-ketogluterase
Pyridoxal-phosphate (PLP)
27. 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
trypsin
3' terminal -OH
heterochromatin
cAMP
28. PKa = pH
[B]=[A] - ratio = 1
VLDL
2 -4 DNP
origin of multi gene families
29. Actin - myosin - and other muscle proteins
mitochondria
PEP carboxykinase
microfiliments
pH
30. Dynins and kinesins (movement) - cilia and flagella
northern blot
alternative splicing
Hexokinase and PFK1
microtubules
31. When exons are arranged in multiple orders after removal of introns
Non Polar AAs
cell plate
origin of multi gene families
alternative splicing
32. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
biotin
chance of in frame fusion for operon? and gene?
PEP carboxylase
Hfr bacteria
33. 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
SOS repair
epimers
temperate bacteriophage
Pyridoxal-phosphate (PLP)
34. Circular and double stranded
mtDNA and chDNA
VLDL
trypsin
Polytene chromosome
35. 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.
phosphorolysis
tyrosine kinase
temperate bacteriophage
Charged AAs
36. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high
PEP carboxykinase
aconitase
PFK2
cell plate
37. Nuclear lamins - desmins - keratins - internexins (structure)
Polar AAs
intermediate filiments
nondisjunction
Aromatic/Achiral AAs
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.
phosphatase
Non Polar AAs
mtDNA and chDNA
F+ bacteria
39. Krebs cycle enzyme
Polar AAs
aconitase
PFK2
2D gel electrophoresis
40. Donates electrons to form a bond such as N in amines and O in alcohols
Pyridoxal-phosphate (PLP)
Acetyl-CoA carboxylase
chance of in frame fusion for operon? and gene?
nucleophile
41. 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
Hfr bacteria
Steroid Hormones
gene conversion
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
catalase
PFK1
Pyridoxal-phosphate (PLP)
phosphatase
43. RNA protein-complex
centimorgans
SRP - signal recognition particle
mitochondria
Non Polar AAs
44. Makes Acetyl-CoA from pyruvate
microtubules
centimorgans
northern blot
pyruvate dehydrogenase
45. Acetyl-CoA to malonyl-CoA - rate limiting step in fatty acid synthesis
Charged AAs
intermediate filiments
Acetyl-CoA carboxylase
SRP - signal recognition particle
46. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
Pyruvate carboxylase
euchromatin
biotin
catalase
47. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
centimorgans
cis and trans golgi network
heterochromatin
SOS repair
48. Gene duplication
PEP carboxykinase
mtDNA and chDNA
origin of multi gene families
Steroid Hormones
49. Only one carbon center is changed
PFK1
[A][B]
epimers
tyrosine kinase
50. Gene has multiple effects
heterochromatin
Steroid Hormones
pleiotropic
VLDL