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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. Circular and double stranded
mtDNA and chDNA
F- bacteria
nondisjunction
FAD and NADP ATP equivalents
2. Actin - myosin - and other muscle proteins
Polar AAs
microfiliments
heterochromatin
cAMP
3. Krebs cycle enzyme
pleiotropic
aconitase
epimers
Thiamine Pyrophosphate (TPP)
4. Cleaves on C terminal side of lysine and arginine
Polar AAs
trypsin
catalase
euchromatin
5. Nuclear lamins - desmins - keratins - internexins (structure)
intermediate filiments
nucleophile
trypsin
origin of multi gene families
6. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
eEF-1 and eEF-2
Polar AAs
biotin
F' (F-prime) bacteria
7. Dynins and kinesins (movement) - cilia and flagella
PFK1
microtubules
chymotrypsin
microfiliments
8. Acetyl-CoA to malonyl-CoA - rate limiting step in fatty acid synthesis
VLDL
PEP carboxylase
Acetyl-CoA carboxylase
chymotrypsin
9. Derived from golgi vesicles
cell plate
SRP - signal recognition particle
eEF-1 and eEF-2
Non Polar AAs
10. 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
alternative splicing
2D gel electrophoresis
cAMP
F+ bacteria
11. Can result in allele differences - suce as 3:1 and 1:3
gene conversion
Aromatic/Achiral AAs
2D gel electrophoresis
nucleophile
12. Contain their own DNA - mRNA - and proteins to synthesize more
Polytene chromosome
mitochondria
[A][B]
pyruvate dehydrogenase
13. Enzymes in Krebs cycle that produce NADH
Signal recognition particle (SRP)
pH
isocitrate dehydrogenase and a-ketogluterase
nondisjunction
14. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane - leading to a rapid consumption of energy without generation of ATP.
F' (F-prime) bacteria
isocitrate dehydrogenase and a-ketogluterase
Hfr bacteria
2 -4 DNP
15. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
epinephrine
heterochromatin
microfiliments
EF-G
16. Vitamin B1 - cofactor that aids in dehydrogenase mostly
[A][B]
heterochromatin
intermediate filiments
Thiamine Pyrophosphate (TPP)
17. Makes Acetyl-CoA from pyruvate
origin of multi gene families
pyruvate dehydrogenase
Aromatic/Achiral AAs
PEP carboxylase
18. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
northern blot
F' (F-prime) bacteria
Thiamine Pyrophosphate (TPP)
Signal recognition particle (SRP)
19. Non-protein chemical compound that is bound to a protein and is required for the protein'S biological activity
PFK2
temperate bacteriophage
kb
cofactors
20. Gene duplication
euchromatin
PFK1
microtubules
origin of multi gene families
21. When exons are arranged in multiple orders after removal of introns
alternative splicing
Polytene chromosome
Steroid Hormones
FAD and NADP ATP equivalents
22. 1e-14
PFK2
SRP - signal recognition particle
[A][B]
centimorgans
23. RNA protein-complex
eEF-1 and eEF-2
SRP - signal recognition particle
trypsin
Polytene chromosome
24. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
heterochromatin
eEF-1 and eEF-2
mtDNA and chDNA
PFK2
25. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
3' terminal -OH
FAD and NADP ATP equivalents
PEP carboxylase
2D gel electrophoresis
26. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
EF-G
biotin
Thiamine Pyrophosphate (TPP)
cAMP
27. 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
PEP carboxykinase
epimers
[B]=[A] - ratio = 1
epinephrine
28. Ser - Cys - Thr - Gln - Asn
Polar AAs
northern blot
biotin
mitochondria
29. Triglycerides - cholesterols - and phospholipids
VLDL
temperate bacteriophage
pleiotropic
centimorgans
30. Measures physical base pair distance
2 -4 DNP
PEP carboxylase
VLDL
kb
31. Donates electrons to form a bond such as N in amines and O in alcohols
pyruvate dehydrogenase
VLDL
nucleophile
centimorgans
32. = pKa+ log(B/A) - -log(Ka)
pleiotropic
chymotrypsin
pH
trypsin
33. Isoelectric point and MW
2D gel electrophoresis
cis and trans golgi network
mtDNA and chDNA
phosphatase
34. Failure of chromosome pairs to separate during meiosis
northern blot
aconitase
nondisjunction
chymotrypsin
35. Phe - Trp - Tyr - Gly - Pro
mtDNA and chDNA
mitochondria
Aromatic/Achiral AAs
F+ bacteria
36. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
microfiliments
tyrosine kinase
epimers
Aromatic/Achiral AAs
37. Can undergo both lytic and lysogenic cycle
temperate bacteriophage
Pyruvate carboxylase
Polytene chromosome
Steroid Hormones
38. Operon 1/2 - gene 1/6
chance of in frame fusion for operon? and gene?
euchromatin
PEP carboxylase
temperate bacteriophage
39. Can serve as a primer
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40. Repeated replication w/o cell division
Polytene chromosome
Pyruvate carboxylase
cofactors
phosphorolysis
41. 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
alternative splicing
Acetyl-CoA carboxylase
Thiamine Pyrophosphate (TPP)
42. Recruits RecA protein - inhibited by LexA - results in mutagenesis
PEP carboxykinase
SOS repair
cell plate
F+ bacteria
43. Serine protease that cleaves on c terminal side of aromatics
F' (F-prime) bacteria
F- bacteria
kb
chymotrypsin
44. Cis faces the ER and trans faces the plasma membrane
cis and trans golgi network
microfiliments
mtDNA and chDNA
F- bacteria
45. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
phosphatase
euchromatin
2D gel electrophoresis
Thiamine Pyrophosphate (TPP)
46. 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.
microfiliments
phosphorolysis
intermediate filiments
SRP - signal recognition particle
47. Do not contain F factor
microfiliments
biotin
gene conversion
F- bacteria
48. 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)
[A][B]
alternative splicing
phosphorolysis
49. FAD-2 - NADP-3
heterochromatin
FAD and NADP ATP equivalents
euchromatin
phosphorolysis
50. Gene has multiple effects
pleiotropic
pyruvate dehydrogenase
tyrosine kinase
Aromatic/Achiral AAs