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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. 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
isocitrate dehydrogenase and a-ketogluterase
pH
F+ bacteria
2. Do not contain F factor
[A][B]
F- bacteria
mtDNA and chDNA
Pyruvate carboxylase
3. PKa = pH
Thiamine Pyrophosphate (TPP)
[B]=[A] - ratio = 1
tyrosine kinase
phosphorolysis
4. Neutralizes H2O2 - found in lysosomes
PFK1
temperate bacteriophage
catalase
kinase
5. Vitamin B1 - cofactor that aids in dehydrogenase mostly
Thiamine Pyrophosphate (TPP)
kb
Steroid Hormones
temperate bacteriophage
6. Measures physical base pair distance
F+ bacteria
kb
FAD and NADP ATP equivalents
epinephrine
7. Failure of chromosome pairs to separate during meiosis
nondisjunction
PFK2
[A][B]
Aromatic/Achiral AAs
8. Actin - myosin - and other muscle proteins
F- bacteria
intermediate filiments
microfiliments
pH
9. Nuclear lamins - desmins - keratins - internexins (structure)
biotin
chymotrypsin
intermediate filiments
PFK2
10. Val - Leu - Ile - Ala - Met
Non Polar AAs
F- bacteria
phosphatase
Signal recognition particle (SRP)
11. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane - leading to a rapid consumption of energy without generation of ATP.
2 -4 DNP
kinase
intermediate filiments
Pyruvate carboxylase
12. Donates electrons to form a bond such as N in amines and O in alcohols
heterochromatin
nucleophile
Aromatic/Achiral AAs
phosphorolysis
13. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
cofactors
intermediate filiments
PEP carboxylase
pyruvate dehydrogenase
14. Isoelectric point and MW
EF-G
Steroid Hormones
Aromatic/Achiral AAs
2D gel electrophoresis
15. Possess an F plasmid that also includes some DNA taken from the bacterial genome. Sometimes it is formed by incorrect excision from the chromosome
16. MRNA
mitochondria
northern blot
microfiliments
2D gel electrophoresis
17. 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.
isocitrate dehydrogenase and a-ketogluterase
F' (F-prime) bacteria
Aromatic/Achiral AAs
Hfr bacteria
18. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
origin of multi gene families
cAMP
trypsin
centimorgans
19. When exons are arranged in multiple orders after removal of introns
gene conversion
PEP carboxylase
alternative splicing
Pyridoxal-phosphate (PLP)
20. 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
PFK1
Signal recognition particle (SRP)
Pyridoxal-phosphate (PLP)
euchromatin
21. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
nucleophile
cofactors
tyrosine kinase
pyruvate dehydrogenase
22. Dynins and kinesins (movement) - cilia and flagella
chance of in frame fusion for operon? and gene?
PFK2
microtubules
euchromatin
23. Cis faces the ER and trans faces the plasma membrane
Polytene chromosome
tyrosine kinase
cis and trans golgi network
cAMP
24. 1e-14
[A][B]
2 -4 DNP
Charged AAs
SRP - signal recognition particle
25. Enter cells freely
nucleophile
Steroid Hormones
PEP carboxykinase
alternative splicing
26. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
cell plate
phosphatase
biotin
PEP carboxykinase
27. Triglycerides - cholesterols - and phospholipids
alternative splicing
gene conversion
VLDL
Charged AAs
28. Can undergo both lytic and lysogenic cycle
F+ bacteria
gene conversion
temperate bacteriophage
Polytene chromosome
29. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
VLDL
Pyruvate carboxylase
PEP carboxylase
heterochromatin
30. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
origin of multi gene families
euchromatin
Aromatic/Achiral AAs
F+ bacteria
31. Derived from golgi vesicles
kb
Polytene chromosome
Charged AAs
cell plate
32. Makes Acetyl-CoA from pyruvate
euchromatin
heterochromatin
isocitrate dehydrogenase and a-ketogluterase
pyruvate dehydrogenase
33. 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
isocitrate dehydrogenase and a-ketogluterase
FAD and NADP ATP equivalents
northern blot
34. Repeated replication w/o cell division
Polytene chromosome
cofactors
nondisjunction
isocitrate dehydrogenase and a-ketogluterase
35. Gene has multiple effects
pleiotropic
2 -4 DNP
intermediate filiments
3' terminal -OH
36. Contain their own DNA - mRNA - and proteins to synthesize more
mitochondria
SRP - signal recognition particle
microfiliments
epinephrine
37. 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 -
EF-G
euchromatin
kinase
Non Polar AAs
38. Catalyzes the transport of tRNA and mRNA down the ribosome in prokaryotes
EF-G
Thiamine Pyrophosphate (TPP)
F- bacteria
[B]=[A] - ratio = 1
39. 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
PFK1
phosphatase
heterochromatin
F+ bacteria
40. Operon 1/2 - gene 1/6
chance of in frame fusion for operon? and gene?
Polytene chromosome
2 -4 DNP
SRP - signal recognition particle
41. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
biotin
eEF-1 and eEF-2
2D gel electrophoresis
alternative splicing
42. Gene duplication
gene conversion
origin of multi gene families
phosphatase
F' (F-prime) bacteria
43. RNA protein-complex
Pyridoxal-phosphate (PLP)
SRP - signal recognition particle
[B]=[A] - ratio = 1
chymotrypsin
44. Can result in allele differences - suce as 3:1 and 1:3
mtDNA and chDNA
eEF-1 and eEF-2
F+ bacteria
gene conversion
45. = pKa+ log(B/A) - -log(Ka)
Hfr bacteria
pH
microtubules
2D gel electrophoresis
46. (His - Arg - Lys +) - (Glu - Asp -)
2 -4 DNP
intermediate filiments
F- bacteria
Charged AAs
47. Only one carbon center is changed
epimers
Aromatic/Achiral AAs
Thiamine Pyrophosphate (TPP)
gene conversion
48. Can serve as a primer
49. Phe - Trp - Tyr - Gly - Pro
epimers
Aromatic/Achiral AAs
pH
cell plate
50. Serine protease that cleaves on c terminal side of aromatics
biotin
VLDL
chymotrypsin
Hexokinase and PFK1