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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. Cis faces the ER and trans faces the plasma membrane
epimers
PFK2
FAD and NADP ATP equivalents
cis and trans golgi network
2. 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
cofactors
mitochondria
FAD and NADP ATP equivalents
epinephrine
3. Donates electrons to form a bond such as N in amines and O in alcohols
Non Polar AAs
nucleophile
F- bacteria
phosphatase
4. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
Polytene chromosome
3' terminal -OH
biotin
Hfr bacteria
5. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
euchromatin
nucleophile
phosphatase
3' terminal -OH
6. Val - Leu - Ile - Ala - Met
Non Polar AAs
PEP carboxykinase
[B]=[A] - ratio = 1
2 -4 DNP
7. Cleaves on C terminal side of lysine and arginine
trypsin
northern blot
Thiamine Pyrophosphate (TPP)
F+ bacteria
8. Isoelectric point and MW
[B]=[A] - ratio = 1
chymotrypsin
Signal recognition particle (SRP)
2D gel electrophoresis
9. Gene has multiple effects
pleiotropic
Polar AAs
biotin
Thiamine Pyrophosphate (TPP)
10. Irreversible reaction that require ATP first part of glycolosis
gene conversion
Hexokinase and PFK1
Signal recognition particle (SRP)
Pyridoxal-phosphate (PLP)
11. Operon 1/2 - gene 1/6
FAD and NADP ATP equivalents
northern blot
chance of in frame fusion for operon? and gene?
epinephrine
12. Can undergo both lytic and lysogenic cycle
phosphorolysis
temperate bacteriophage
Aromatic/Achiral AAs
catalase
13. Contain their own DNA - mRNA - and proteins to synthesize more
pyruvate dehydrogenase
intermediate filiments
mitochondria
Aromatic/Achiral AAs
14. Vitamin B1 - cofactor that aids in dehydrogenase mostly
eEF-1 and eEF-2
Thiamine Pyrophosphate (TPP)
pH
cis and trans golgi network
15. Non-protein chemical compound that is bound to a protein and is required for the protein'S biological activity
cis and trans golgi network
Hfr bacteria
SRP - signal recognition particle
cofactors
16. Krebs cycle enzyme
Thiamine Pyrophosphate (TPP)
chymotrypsin
aconitase
phosphorolysis
17. FAD-2 - NADP-3
FAD and NADP ATP equivalents
microfiliments
tyrosine kinase
kinase
18. Circular and double stranded
trypsin
cAMP
mtDNA and chDNA
Acetyl-CoA carboxylase
19. RNA protein-complex
EF-G
centimorgans
SRP - signal recognition particle
nucleophile
20. 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.
Hexokinase and PFK1
F+ bacteria
eEF-1 and eEF-2
cAMP
21. Repeated replication w/o cell division
Polytene chromosome
Hfr bacteria
[B]=[A] - ratio = 1
epimers
22. Can result in allele differences - suce as 3:1 and 1:3
heterochromatin
phosphorolysis
Aromatic/Achiral AAs
gene conversion
23. 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.
Hfr bacteria
PEP carboxylase
PFK2
trypsin
24. 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
euchromatin
PFK1
Polytene chromosome
Hfr bacteria
25. Derived from golgi vesicles
PFK2
nucleophile
SOS repair
cell plate
26. Can serve as a primer
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27. Neutralizes H2O2 - found in lysosomes
chymotrypsin
Pyridoxal-phosphate (PLP)
catalase
microfiliments
28. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane - leading to a rapid consumption of energy without generation of ATP.
[B]=[A] - ratio = 1
nondisjunction
nucleophile
2 -4 DNP
29. Nuclear lamins - desmins - keratins - internexins (structure)
origin of multi gene families
pyruvate dehydrogenase
phosphorolysis
intermediate filiments
30. Do not contain F factor
Acetyl-CoA carboxylase
F- bacteria
nondisjunction
phosphatase
31. Actin - myosin - and other muscle proteins
microtubules
Non Polar AAs
microfiliments
Thiamine Pyrophosphate (TPP)
32. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
EF-G
centimorgans
intermediate filiments
Polytene chromosome
33. 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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34. Gene duplication
F+ bacteria
phosphorolysis
origin of multi gene families
epinephrine
35. 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
cAMP
PFK1
trypsin
PEP carboxykinase
36. MRNA
northern blot
alternative splicing
3' terminal -OH
gene conversion
37. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
VLDL
pH
PEP carboxylase
microtubules
38. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
intermediate filiments
Non Polar AAs
eEF-1 and eEF-2
pyruvate dehydrogenase
39. Catalyzes the irreversible carboxylation of pyruvate to oxaloacetate (OAA).
Pyruvate carboxylase
kb
phosphatase
kinase
40. Enzymes in Krebs cycle that produce NADH
isocitrate dehydrogenase and a-ketogluterase
eEF-1 and eEF-2
catalase
alternative splicing
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 -
Polytene chromosome
kinase
SRP - signal recognition particle
chance of in frame fusion for operon? and gene?
42. Measures physical base pair distance
nondisjunction
kb
cAMP
intermediate filiments
43. Enter cells freely
Steroid Hormones
[B]=[A] - ratio = 1
PFK2
intermediate filiments
44. Dynins and kinesins (movement) - cilia and flagella
epinephrine
PFK2
phosphatase
microtubules
45. 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
PFK2
VLDL
SRP - signal recognition particle
Pyridoxal-phosphate (PLP)
46. Recruits RecA protein - inhibited by LexA - results in mutagenesis
F- bacteria
2 -4 DNP
PEP carboxykinase
SOS repair
47. Failure of chromosome pairs to separate during meiosis
PFK1
gene conversion
nondisjunction
origin of multi gene families
48. Phe - Trp - Tyr - Gly - Pro
PEP carboxykinase
isocitrate dehydrogenase and a-ketogluterase
phosphorolysis
Aromatic/Achiral AAs
49. Triglycerides - cholesterols - and phospholipids
phosphatase
Acetyl-CoA carboxylase
gene conversion
VLDL
50. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
pleiotropic
Hexokinase and PFK1
heterochromatin
mtDNA and chDNA