SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Catalyzes the addition of bicarbonate to phosphoenolpyruvate (PEP) to form the four-carbon compound oxaloacetate
PEP carboxylase
temperate bacteriophage
VLDL
SRP - signal recognition particle
2. Do not contain F factor
Polar AAs
EF-G
isocitrate dehydrogenase and a-ketogluterase
F- bacteria
3. Unwound - participates in the active transcription of DNA to mRNA products - site of RNA Pol II regulation
Charged AAs
chymotrypsin
euchromatin
F- bacteria
4. Acetyl-CoA to malonyl-CoA - rate limiting step in fatty acid synthesis
epinephrine
Acetyl-CoA carboxylase
Pyruvate carboxylase
origin of multi gene families
5. Catalyzes the transport of tRNA and mRNA down the ribosome in eukaryotes
eEF-1 and eEF-2
phosphatase
Aromatic/Achiral AAs
Steroid Hormones
6. Catalyze the phosphorylation of tyrosine residues in proteins - involved in signal cascades
tyrosine kinase
northern blot
PEP carboxykinase
microtubules
7. Dynins and kinesins (movement) - cilia and flagella
microtubules
EF-G
PEP carboxykinase
Hfr bacteria
8. 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]
Charged AAs
alternative splicing
9. Repeated replication w/o cell division
PEP carboxykinase
Polytene chromosome
intermediate filiments
Pyridoxal-phosphate (PLP)
10. Recognizes and targets specific proteins to the endoplasmic reticulum in eukaryotes and the plasma membrane in prokaryotes
Hexokinase and PFK1
Signal recognition particle (SRP)
pH
heterochromatin
11. Failure of chromosome pairs to separate during meiosis
alternative splicing
intermediate filiments
tyrosine kinase
nondisjunction
12. = pKa+ log(B/A) - -log(Ka)
pH
mtDNA and chDNA
Pyridoxal-phosphate (PLP)
Hexokinase and PFK1
13. Derived from golgi vesicles
centimorgans
FAD and NADP ATP equivalents
cell plate
Signal recognition particle (SRP)
14. Makes Acetyl-CoA from pyruvate
F+ bacteria
nondisjunction
F' (F-prime) bacteria
pyruvate dehydrogenase
15. Can result in allele differences - suce as 3:1 and 1:3
trypsin
microtubules
gene conversion
Aromatic/Achiral AAs
16. Recruits RecA protein - inhibited by LexA - results in mutagenesis
mitochondria
SOS repair
[B]=[A] - ratio = 1
Pyridoxal-phosphate (PLP)
17. Enzymes in Krebs cycle that produce NADH
isocitrate dehydrogenase and a-ketogluterase
pH
SRP - signal recognition particle
aconitase
18. Donates electrons to form a bond such as N in amines and O in alcohols
nucleophile
SRP - signal recognition particle
Polytene chromosome
2 -4 DNP
19. Cleaves on C terminal side of lysine and arginine
centimorgans
phosphatase
pleiotropic
trypsin
20. Enter cells freely
heterochromatin
temperate bacteriophage
kinase
Steroid Hormones
21. Irreversible reaction that require ATP first part of glycolosis
Steroid Hormones
PEP carboxykinase
Polytene chromosome
Hexokinase and PFK1
22. Converts oxaloacetate into phosphoenolpyruvate and carbon dioxide.
Charged AAs
pyruvate dehydrogenase
Polar AAs
PEP carboxykinase
23. Actin - myosin - and other muscle proteins
origin of multi gene families
microfiliments
phosphorolysis
[A][B]
24. 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.
3' terminal -OH
eEF-1 and eEF-2
phosphorolysis
Hexokinase and PFK1
25. Vitamin B7 - cofactor that aids in CO2 transfer (carboxylase)
biotin
pyruvate dehydrogenase
Pyruvate carboxylase
F' (F-prime) bacteria
26. Phe - Trp - Tyr - Gly - Pro
3' terminal -OH
aconitase
pH
Aromatic/Achiral AAs
27. Can serve as a primer
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
28. Only one carbon center is changed
nondisjunction
phosphatase
Steroid Hormones
epimers
29. MRNA
3' terminal -OH
northern blot
origin of multi gene families
tyrosine kinase
30. (His - Arg - Lys +) - (Glu - Asp -)
3' terminal -OH
catalase
phosphatase
Charged AAs
31. Tightly packed form of DNA - less accessible to protein factors that usually bind DNA
PEP carboxykinase
Steroid Hormones
heterochromatin
2D gel electrophoresis
32. Circular and double stranded
epimers
SRP - signal recognition particle
mtDNA and chDNA
VLDL
33. Serine protease that cleaves on c terminal side of aromatics
2D gel electrophoresis
VLDL
cofactors
chymotrypsin
34. Possess an F plasmid that also includes some DNA taken from the bacterial genome. Sometimes it is formed by incorrect excision from the chromosome
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
35. 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 -
phosphatase
kinase
Thiamine Pyrophosphate (TPP)
[A][B]
36. 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.
biotin
F+ bacteria
microfiliments
alternative splicing
37. RNA protein-complex
3' terminal -OH
SRP - signal recognition particle
microtubules
cAMP
38. Cis faces the ER and trans faces the plasma membrane
nondisjunction
F' (F-prime) bacteria
cis and trans golgi network
origin of multi gene families
39. Can undergo both lytic and lysogenic cycle
Polytene chromosome
trypsin
microfiliments
temperate bacteriophage
40. An enzyme that removes a phosphate group from its substrate
kinase
phosphatase
trypsin
euchromatin
41. Regulator of glycolysis when glucose is low by cleaving 2;6 BPG lowering PFK1 - opposite effect when glucose is high
cis and trans golgi network
catalase
PFK2
nondisjunction
42. Operon 1/2 - gene 1/6
Charged AAs
microtubules
phosphatase
chance of in frame fusion for operon? and gene?
43. Val - Leu - Ile - Ala - Met
chymotrypsin
Thiamine Pyrophosphate (TPP)
Non Polar AAs
mtDNA and chDNA
44. When exons are arranged in multiple orders after removal of introns
Aromatic/Achiral AAs
biotin
alternative splicing
microtubules
45. Gene has multiple effects
pleiotropic
Pyruvate carboxylase
SRP - signal recognition particle
EF-G
46. FAD-2 - NADP-3
Pyridoxal-phosphate (PLP)
FAD and NADP ATP equivalents
cell plate
microfiliments
47. Isoelectric point and MW
Acetyl-CoA carboxylase
catalase
2D gel electrophoresis
cell plate
48. It uncouples oxidative phosphorylation by carrying protons across the mitochondrial membrane - leading to a rapid consumption of energy without generation of ATP.
microtubules
2 -4 DNP
tyrosine kinase
phosphatase
49. Measure tendency for recombination (frequency) 1cM = 1% chance of being separated
pH
nucleophile
SRP - signal recognition particle
centimorgans
50. 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.
Acetyl-CoA carboxylase
Steroid Hormones
Hfr bacteria
Hexokinase and PFK1