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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. When exons are arranged in multiple orders after removal of introns
phosphorolysis
Signal recognition particle (SRP)
chance of in frame fusion for operon? and gene?
alternative splicing
2. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
PEP carboxylase
heterochromatin
centimorgans
mitochondria
3. Gene has multiple effects
trypsin
SRP - signal recognition particle
Polar AAs
pleiotropic
4. Measures physical base pair distance
kb
Aromatic/Achiral AAs
Polytene chromosome
tyrosine kinase
5. PKa = pH
F+ bacteria
EF-G
3' terminal -OH
[B]=[A] - ratio = 1
6. Gene duplication
Pyridoxal-phosphate (PLP)
origin of multi gene families
Thiamine Pyrophosphate (TPP)
Steroid Hormones
7. Enter cells freely
nondisjunction
Charged AAs
Steroid Hormones
nucleophile
8. Ser - Cys - Thr - Gln - Asn
PFK1
Polar AAs
intermediate filiments
Thiamine Pyrophosphate (TPP)
9. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
2 -4 DNP
PFK2
centimorgans
[A][B]
10. MRNA
northern blot
Steroid Hormones
epimers
FAD and NADP ATP equivalents
11. Isoelectric point and MW
epinephrine
[A][B]
2D gel electrophoresis
nucleophile
12. 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
microtubules
temperate bacteriophage
Steroid Hormones
PFK1
13. Neutralizes H2O2 - found in lysosomes
chymotrypsin
catalase
nondisjunction
Non Polar AAs
14. Phe - Trp - Tyr - Gly - Pro
[B]=[A] - ratio = 1
Hexokinase and PFK1
alternative splicing
Aromatic/Achiral AAs
15. Dynins and kinesins (movement) - cilia and flagella
microtubules
nucleophile
euchromatin
nondisjunction
16. 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.
[B]=[A] - ratio = 1
VLDL
F+ bacteria
centimorgans
17. Possess an F plasmid that also includes some DNA taken from the bacterial genome. Sometimes it is formed by incorrect excision from the chromosome
18. Cleaves on C terminal side of lysine and arginine
phosphatase
alternative splicing
euchromatin
trypsin
19. Vitamin B1 - cofactor that aids in dehydrogenase mostly
Thiamine Pyrophosphate (TPP)
cell plate
F' (F-prime) bacteria
origin of multi gene families
20. Can result in allele differences - suce as 3:1 and 1:3
aconitase
PEP carboxykinase
gene conversion
phosphatase
21. Nuclear lamins - desmins - keratins - internexins (structure)
intermediate filiments
2 -4 DNP
microtubules
centimorgans
22. 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
chymotrypsin
mitochondria
cofactors
23. Catalyzes the irreversible carboxylation of pyruvate to oxaloacetate (OAA).
Pyruvate carboxylase
epimers
F- bacteria
eEF-1 and eEF-2
24. Contain their own DNA - mRNA - and proteins to synthesize more
Hexokinase and PFK1
mitochondria
isocitrate dehydrogenase and a-ketogluterase
cofactors
25. Irreversible reaction that require ATP first part of glycolosis
mitochondria
origin of multi gene families
Hexokinase and PFK1
phosphorolysis
26. Val - Leu - Ile - Ala - Met
Non Polar AAs
[A][B]
Acetyl-CoA carboxylase
EF-G
27. Donates electrons to form a bond such as N in amines and O in alcohols
catalase
Charged AAs
nucleophile
pleiotropic
28. FAD-2 - NADP-3
FAD and NADP ATP equivalents
Non Polar AAs
eEF-1 and eEF-2
nucleophile
29. Failure of chromosome pairs to separate during meiosis
nondisjunction
Hexokinase and PFK1
PFK2
chance of in frame fusion for operon? and gene?
30. Triglycerides - cholesterols - and phospholipids
F+ bacteria
mitochondria
VLDL
isocitrate dehydrogenase and a-ketogluterase
31. Can serve as a primer
32. Can undergo both lytic and lysogenic cycle
biotin
temperate bacteriophage
chymotrypsin
intermediate filiments
33. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
Signal recognition particle (SRP)
centimorgans
northern blot
tyrosine kinase
34. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.
nondisjunction
pH
PEP carboxykinase
catalase
35. Do not contain F factor
heterochromatin
biotin
intermediate filiments
F- bacteria
36. Repeated replication w/o cell division
3' terminal -OH
Polar AAs
2D gel electrophoresis
Polytene chromosome
37. Cis faces the ER and trans faces the plasma membrane
cis and trans golgi network
F- bacteria
cell plate
mitochondria
38. 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
Signal recognition particle (SRP)
heterochromatin
epinephrine
pH
39. 1e-14
[A][B]
microfiliments
mtDNA and chDNA
[B]=[A] - ratio = 1
40. 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
cofactors
phosphatase
Pyridoxal-phosphate (PLP)
3' terminal -OH
41. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
nondisjunction
cis and trans golgi network
pH
biotin
42. Circular and double stranded
nondisjunction
euchromatin
Hexokinase and PFK1
mtDNA and chDNA
43. (His - Arg - Lys +) - (Glu - Asp -)
Charged AAs
pyruvate dehydrogenase
Steroid Hormones
phosphatase
44. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
F- bacteria
eEF-1 and eEF-2
Acetyl-CoA carboxylase
chymotrypsin
45. Enzymes in Krebs cycle that produce NADH
temperate bacteriophage
pH
isocitrate dehydrogenase and a-ketogluterase
PEP carboxylase
46. Operon 1/2 - gene 1/6
chance of in frame fusion for operon? and gene?
eEF-1 and eEF-2
PFK1
gene conversion
47. Makes Acetyl-CoA from pyruvate
pyruvate dehydrogenase
PEP carboxykinase
isocitrate dehydrogenase and a-ketogluterase
Signal recognition particle (SRP)
48. Krebs cycle enzyme
pH
alternative splicing
epinephrine
aconitase
49. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
Signal recognition particle (SRP)
chymotrypsin
F- bacteria
catalase
50. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
3' terminal -OH
Steroid Hormones
euchromatin
Hexokinase and PFK1