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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. MRNA
mitochondria
[A][B]
northern blot
mtDNA and chDNA
2. Actin - myosin - and other muscle proteins
catalase
chance of in frame fusion for operon? and gene?
microfiliments
phosphatase
3. 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.
temperate bacteriophage
[B]=[A] - ratio = 1
F+ bacteria
epinephrine
4. Vitamin B1 - cofactor that aids in dehydrogenase mostly
Thiamine Pyrophosphate (TPP)
cAMP
chance of in frame fusion for operon? and gene?
pleiotropic
5. Ser - Cys - Thr - Gln - Asn
Polytene chromosome
Polar AAs
Pyruvate carboxylase
northern blot
6. Can result in allele differences - suce as 3:1 and 1:3
Polar AAs
gene conversion
centimorgans
Acetyl-CoA carboxylase
7. Nuclear lamins - desmins - keratins - internexins (structure)
aconitase
intermediate filiments
PFK2
phosphorolysis
8. Donates electrons to form a bond such as N in amines and O in alcohols
VLDL
nucleophile
phosphatase
aconitase
9. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
kb
F- bacteria
biotin
Hexokinase and PFK1
10. = pKa+ log(B/A) - -log(Ka)
FAD and NADP ATP equivalents
pH
F' (F-prime) bacteria
epimers
11. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
F+ bacteria
EF-G
Signal recognition particle (SRP)
[B]=[A] - ratio = 1
12. 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.
phosphatase
nucleophile
aconitase
phosphorolysis
13. Gene has multiple effects
Acetyl-CoA carboxylase
pleiotropic
tyrosine kinase
PFK2
14. Circular and double stranded
3' terminal -OH
Signal recognition particle (SRP)
alternative splicing
mtDNA and chDNA
15. Enter cells freely
trypsin
F+ bacteria
PFK1
Steroid Hormones
16. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
PFK1
euchromatin
microfiliments
trypsin
17. Measures physical base pair distance
mtDNA and chDNA
nondisjunction
Polar AAs
kb
18. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
SRP - signal recognition particle
centimorgans
2 -4 DNP
Hexokinase and PFK1
19. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
eEF-1 and eEF-2
Pyridoxal-phosphate (PLP)
Steroid Hormones
FAD and NADP ATP equivalents
20. Catalyzes the irreversible carboxylation of pyruvate to oxaloacetate (OAA).
chance of in frame fusion for operon? and gene?
Pyruvate carboxylase
isocitrate dehydrogenase and a-ketogluterase
intermediate filiments
21. 1e-14
2D gel electrophoresis
kinase
[A][B]
pleiotropic
22. Triglycerides - cholesterols - and phospholipids
cAMP
Polytene chromosome
VLDL
SOS repair
23. Operon 1/2 - gene 1/6
PFK1
euchromatin
chance of in frame fusion for operon? and gene?
microfiliments
24. Krebs cycle enzyme
nucleophile
Non Polar AAs
Pyridoxal-phosphate (PLP)
aconitase
25. Do not contain F factor
F- bacteria
Pyruvate carboxylase
Polytene chromosome
origin of multi gene families
26. FAD-2 - NADP-3
microtubules
biotin
2 -4 DNP
FAD and NADP ATP equivalents
27. (His - Arg - Lys +) - (Glu - Asp -)
kb
mitochondria
cis and trans golgi network
Charged AAs
28. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high
tyrosine kinase
nucleophile
isocitrate dehydrogenase and a-ketogluterase
PFK2
29. 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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30. Only one carbon center is changed
Polar AAs
origin of multi gene families
epimers
kb
31. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane - leading to a rapid consumption of energy without generation of ATP.
EF-G
Acetyl-CoA carboxylase
2 -4 DNP
phosphorolysis
32. Failure of chromosome pairs to separate during meiosis
nondisjunction
FAD and NADP ATP equivalents
F' (F-prime) bacteria
[A][B]
33. Enzymes in Krebs cycle that produce NADH
microtubules
heterochromatin
Pyruvate carboxylase
isocitrate dehydrogenase and a-ketogluterase
34. Val - Leu - Ile - Ala - Met
Non Polar AAs
Acetyl-CoA carboxylase
temperate bacteriophage
mitochondria
35. Cleaves on C terminal side of lysine and arginine
isocitrate dehydrogenase and a-ketogluterase
PEP carboxylase
trypsin
F+ bacteria
36. Dynins and kinesins (movement) - cilia and flagella
Charged AAs
2 -4 DNP
microtubules
nondisjunction
37. Irreversible reaction that require ATP first part of glycolosis
Hexokinase and PFK1
kb
temperate bacteriophage
kinase
38. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
[A][B]
centimorgans
heterochromatin
EF-G
39. Cis faces the ER and trans faces the plasma membrane
alternative splicing
F- bacteria
cis and trans golgi network
PEP carboxykinase
40. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
VLDL
EF-G
alternative splicing
Steroid Hormones
41. Neutralizes H2O2 - found in lysosomes
Signal recognition particle (SRP)
catalase
mtDNA and chDNA
Hexokinase and PFK1
42. Derived from golgi vesicles
Signal recognition particle (SRP)
temperate bacteriophage
Pyridoxal-phosphate (PLP)
cell plate
43. An enzyme that removes a phosphate group from its substrate
phosphatase
pH
Hexokinase and PFK1
PFK1
44. Repeated replication w/o cell division
phosphorolysis
microfiliments
Polytene chromosome
nucleophile
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
tyrosine kinase
pyruvate dehydrogenase
nondisjunction
PFK1
46. When exons are arranged in multiple orders after removal of introns
cAMP
euchromatin
alternative splicing
mitochondria
47. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
eEF-1 and eEF-2
tyrosine kinase
nondisjunction
gene conversion
48. Makes Acetyl-CoA from pyruvate
aconitase
PFK2
tyrosine kinase
pyruvate dehydrogenase
49. 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
2D gel electrophoresis
PFK2
cAMP
cofactors
50. Can serve as a primer
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