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Test your basic knowledge |
First Aid: Biochemistry Molecular
Start Test
Study First
Subjects
:
health-sciences
,
first-aid
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. Scrutinizes aa before and after it binds to tRNA. If incorrect bond is hydrolyzed.
purines
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
Ehlers Danlos
Aminoacylt - tRNA synthetase
2. Activated by GTP hydrolosis initiation factors help assembel the 40 S ribosomal subunites with the initiatior tRNA and are released whent he mRNA and the ribosomal subunit assemple with the complex
Euchromatin
Protein synthesis initiation
In eukaryotes the starting amino acid is...
tRNA activation
3. Inhbits RNA pol II (found in death cap mushrooms)
alpha amintin
Cell cycle
Prokaryotes
nucleotide
4. Non homologous end joining
capped and tail transcript is called
Heterochromatin
Double Strand DNA repair
Enhancers and silencer may be located_____
5. Poly adenylation
tRNA activation
methionine is only encoded by
Digoxin (cardiac glycosides)
step two of RNA processing
6. No proofreading function but can initiate chains. RNA poymerase II opens DNA at promoter site
Macrolides
Proofreading function in eukaryotic RNA
DNA ligase
purines
7. Blocks denovo purine synthesis
6MP
What type of collagen is most affected in Ehlers Danlos
dyenin
Cell cycle
8. Nucleotide excision repair - Base Excision repair - Mismath repair
Where do introns and exons stay
Common amino acids in elastin
Paclitaxil
Single Strand DNA Repair types
9. Odd 30S plus 50 S=70S
kinesin
Prokaryotes
RNA polymerases in eukaryotes
GFAP
10. AD and AR- associated iwth joint dislocation - berry aneurysms - organ rupture
universal
Collagedn synthesis where?
Associations of Ehlers Danlos
Non homologous end joining
11. RNA polymerase I makes rRNA - RNA pol II makes mRNA - RNA pol III makes tRNA
RNA polymerases in eukaryotes
Clindamycin
Elastin is broken down by
Associations of Ehlers Danlos
12. Anit helminth - act on microtubules
Mebendazole/thiabendazole
frame shift
DNA pol III
Proteosomal degradation
13. Inhibits by binding to the potassium side
Proofreading function in eukaryotic RNA
Smooth ER
Oubain
Thymine has a
14. Capping on 5 prime end (7 methylguanosine) -
Euchromatin
tRNA
Step one of RNA processing
What ties teh nucleosome together
15. Cyclin depndent kinases; consituative and inactive
CDKs
Neurofilaments
Elastin is broken down by
Outside the cell what processing must be done in procolalgen
16. Remain in G0 regenerate from stem cells
Total energy expenditure requirement for translocation
intermediate filaments
Permanent cells
Stable (quiescent)
17. Responsible for the accuracy of amino acid selection
Initial transcript without processing is known as
dyenin
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
Oubain
18. Cilia - glagella - mitotic spindle - neurons - centrioles
RNA processing in eukaryotes occurs
polyadenylation does/does not require a template
microtubule
tRNA gripping and going places
19. VItamin C
tRNA Structure
What does the hydroxylation of proline and lysine require
tRNA aminoacylation
Enhancer
20. Binds 50S blocking translocation
Prokaryotes
Fluoroquinolones
Clindamycin
What ties teh nucleosome together
21. Accurate base pairing is required only in the first 2 nucleotide positions of an mRNA so codons differing ht e3rd wobble psoition may code for the same tRNA/amino acid code
Aminoglycosides
tRNA
universal
The only histone not on the core
22. Microvilli - muscle contraction - cytokinesis - adhering juntions
tRNA
actin and myosin
Silencer
Functional organization of the gene
23. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end
helicase
tRNA Structure
Cyclins
Primase
24. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments
Non homologous end joining
Aminoacylt - tRNA synthetase
Enhancer
intermediate filaments
25. Ketone
Cholchicine
Which end of the tRNA is the amino acid bound to?
Guanine has a
histone octamer names
26. The N to C
Gag on pure gold
Cyclins
Protein synthesis is in which direction
Collagedn synthesis where?
27. H1 string
tRNA Structure
Free ribosomes
What ties teh nucleosome together
Macrolides
28. More than 1 codon may code for the same amino acid
Kartageners syndrome
intermediate filaments
degenerate or redundant
In eukaryotes the starting amino acid is...
29. Immotile cilia due to a dyenin arm defect. Results in male nad female inferticility (sperm immotile) - bronchiectasis - and recurrent sinusisits - associated with situs inversus
Cyclins
Kartageners syndrome
polyadenylation does/does not require a template
Macrolides
30. Neurons
Step Three of RNA processing
Paclitaxil
Neurofilaments
Promoter mutation
31. Inhibits the atpase which increases intracellular sodium which increases intracellular calcium increases cardiaccontractility
Hereditary non polyposis colorectal cancer
Excocytosis of collagen
Digoxin (cardiac glycosides)
tRNA aminoacylation
32. Has enough energy to created the peptide bond
Where do introns and exons stay
What ties teh nucleosome together
Hydroxylation of which amino acids are attached to Glycine to form collagen
the tRNA- amino acid bond
33. Anti breast cancer - acts on mts
Replication fork
DNA pol I
Paclitaxil
Alports syndrome
34. G1 - S - G2 - Mitosis
Covalent alterations
Higher the cholesterol or long saturated fatty acid content
Fluoroquinolones
Cell cycle order
35. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly
commaless - non - overlapping
microtubule
capped and tail transcript is called
transition
36. Checkpoints control transition between phases of cell cycle. regulated by cyclins - CDKs and tumor suppressors. Mitosis (shortest phse)
Going APE
Chediak Higashi syndrome
degenerate or redundant
Cell cycle
37. Exocytose procollagen into extracellylar sace
methionine is only encoded by
Gag on pure gold
What type of collagen is most affected in Ehlers Danlos
Excocytosis of collagen
38. Same aa often base change in 3rd position of codon
silent mutation
tRNA Structure
Cell cycle order
Macrolides
39. Anti cancer - act on microtubules
Elastase is inhibited by
Vincristine/Vinblastine
Collagedn synthesis where?
Covalent alterations
40. Uracil
Elastin
Covalent alterations
Labile
Deamination of cytosine makes
41. Made from orogate precuror with PRPP added later
Non homologous end joining
Base excision repair
actin and myosin
pyrimadines
42. Site where negative regulators bind
Silencer
What does the hydroxylation of proline and lysine require
Free ribosomes
microtubule
43. 3 H bonds
Step Three of RNA processing
C- G bond
transversion
Immunohistochemical stains vimentin
44. Methionine - which may be removed before translation is completed
tRNA gripping and going places
Clindamycin
chromatin structure
In eukaryotes the starting amino acid is...
45. Particular sequnece in genomre where DNA replication begins. May be single (prokaryotes) or multiple (eukaryotes)
trimethoprim
origin of replication
Prokaryotes
Sodium K ATPase
46. Different exons can be combined to make nique protiens in different times
intermediate filaments
Loading tRNA on to ribosome energy requirement
Alternate splicing
Oubain
47. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine
Elongation
polyadenylation does/does not require a template
origin of replication
Gag on pure gold
48. Site where RNA polymerase and multiple other transciption factors bind to DNA upstream from gene locus (AT rich upstream sequence with TATA and CAAT boxes)
DNA topoisomerases
methionine is only encoded by
promoter
DNA/RNA/Protein syntesis direction
49. Proline - glycine
Tropocollagen cross links between_____ to form____
Common amino acids in elastin
Aminoglycosides
DNA topoisomerases
50. AUG inAUGurates protein synthesis
mRNA start codons
Termination
Which end of the tRNA is the amino acid bound to?
chromatin structure