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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. Completed protein is released from ribosme through simple hydrolosis and dissociates
Loading tRNA on to ribosome energy requirement
Methotrexate
Macrolides
Termination
2. Does not
polyadenylation does/does not require a template
Sodium K ATPase
Excocytosis of collagen
Chediak Higashi syndrome
3. Y shaped region along DNA template where leading and lagging strands are syntehsized
AUG codes For what in prokaryotes
Replication fork
Smooth ER
kinesin
4. Unmethylated - newly synthesized string is recognized - mismatched nucleotides are removed and the gap is filled and resealed
histone octamer names
Mismatch repair
microtubule
Chloramphenicol
5. Unattached to any membrane; site of cytosolic and organeller prtoeins
kinesin
Collagen
Free ribosomes
Proofreading function in eukaryotic RNA
6. Proline - glycine
Common amino acids in elastin
dyenin
Single Strand DNA Repair types
origin of replication
7. ATP ase that links peripheral 9 doublets and causes bending of cilium by differential sliding of doublets
commaless - non - overlapping
Smooth ER
Axonemal dyenin
Stable (quiescent)
8. Specific endonucleases release the oligonucleotide containing damaged bases. DNA polymerase and logase fill and resealt eh gap
Single Strand DNA Repair types
trimethoprim
chromatin structure
Nucleotide excision repair
9. Anit helminth - act on microtubules
nonsense
5FU
pyrimadines
Mebendazole/thiabendazole
10. Contain the actual genetic information coding for protein
kinesin
Exons
Griseofulvin
Loading tRNA on to ribosome energy requirement
11. Inhbits RNA pol II (found in death cap mushrooms)
alpha amintin
Exons
Cholchicine
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
12. Alpha 1 antitrypisn
Ehlers Danlos
Thymine has a
What ties teh nucleosome together
Elastase is inhibited by
13. Muscle
desmin
origin of replication
Aminoacylt - tRNA synthetase
Single Strand DNA Repair types
14. Introns stay In the nucleus whereas EXons EXit and are EXpressed
unambiguous
Associations of Ehlers Danlos
Protein synthesis initiation
Where do introns and exons stay
15. Genetic code is conserved throughout evolution
Thymine has a
CDKs
universal
tRNA Structure
16. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly
Vincristine/Vinblastine
What does the hydroxylation of proline and lysine require
microtubule
Covalent alterations
17. Less condensed - transciptionally active=eu truly transcobed
Methotrexate
Aminoglycosides
Euchromatin
step two of RNA processing
18. Checkpoints control transition between phases of cell cycle. regulated by cyclins - CDKs and tumor suppressors. Mitosis (shortest phse)
Which end of a growing DNA strand is the target
Collagedn synthesis where?
Cell cycle
Euchromatin
19. Microvilli - muscle contraction - cytokinesis - adhering juntions
Prokaryotes
Which end of the tRNA is the amino acid bound to?
Tetracyclines
actin and myosin
20. 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)
Mebendazole/thiabendazole
Translocation
Purines
promoter
21. Uracil
Outside the cell what processing must be done in procolalgen
Deamination of cytosine makes
Eukaroytes
Double Strand DNA repair
22. Close to - far from or even within (in an intron) the gene whose expression it regulates
Elastin
Xeroderma pigmentosum
Paclitaxil
Enhancers and silencer may be located_____
23. 9+2 arrangement of microtubules -
Cilia structure
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
Functional organization of the gene
Macrolides
24. Blocks denovo purine synthesis
C- G bond
Higher the cholesterol or long saturated fatty acid content
Free ribosomes
6MP
25. Responsible for the accuracy of amino acid selection
Cyclins
microtubule
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
What does the hydroxylation of proline and lysine require
26. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine
The only histone not on the core
A- T
Gag on pure gold
Hereditary non polyposis colorectal cancer
27. Cyclin depndent kinases; consituative and inactive
the tRNA- amino acid bond
CDKs
White codon is at the 3 prime end of a tRNA
tRNA Structure
28. Read froma fixed starting point as a continous sequenecs of bases
DNA/RNA/Protein syntesis direction
tRNA
commaless - non - overlapping
What does the hydroxylation of proline and lysine require
29. Inhibits dihydrofolate reductase down thymine
What does the hydroxylation of proline and lysine require
Gag on pure gold
Methotrexate
DNA/RNA/Protein syntesis direction
30. Different exons can be combined to make nique protiens in different times
Excocytosis of collagen
helicase
Post - translational modifications
Alternate splicing
31. Retrograde to microtubules
dyenin
polyadenylation does/does not require a template
Permanent cells
Digoxin (cardiac glycosides)
32. The 3 prime hydroxyl of the nascent chain is the target
Which end of a growing DNA strand is the target
Termination
RNA polymerases in eukaryotes
Collagen
33. No proofreading function but can initiate chains. RNA poymerase II opens DNA at promoter site
Protein synthesis is in which direction
Proofreading function in eukaryotic RNA
Axonemal dyenin
unambiguous
34. Bind 50S blocking translocation
Replication fork
Oubain
Macrolides
Axonemal dyenin
35. H1 string
What ties teh nucleosome together
nucleosid
microtubule
Double Strand DNA repair
36. Unwinds DNA template at replication fork
Plasma membrane composition
Neurofilaments
Axonemal dyenin
helicase
37. Exocytose procollagen into extracellylar sace
Silencer
Excocytosis of collagen
Tumor Suppressors
Which end of the nucleotide has the triphosphate
38. Inhibits bacterials dihydrofolate reducatese down thymine
Collagedn synthesis where?
Xeroderma pigmentosum
trimethoprim
DNA ligase
39. Microtubule polymerization defect resulting in lowered phagocytosis. results in recurrent pyogenic infections - partial albinism and peripheral neuropathy
Aminoglycosides
Euchromatin
Chediak Higashi syndrome
Rough ER
40. Non homologous end joining
Covalent alterations
degenerate or redundant
Double Strand DNA repair
Protein synthesis is in which direction
41. More than 1 codon may code for the same amino acid
Elastin is broken down by
Replication fork
promoter
degenerate or redundant
42. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments
intermediate filaments
Griseofulvin
DNA topoisomerases
capped and tail transcript is called
43. Brings together 2 ends of DNA fragments no requirement for homology
kinesin
Non homologous end joining
Cell cycle
Heterochromatin
44. Stretch of DNA that alters gene expression by binding transcription factors
Enhancer
Paclitaxil
Aminoglycosides
tRNA aminoacylation
45. Base + ribose
Translocation
nucleosid
Heterochromatin
Silencer
46. (A - G) 2 rings Pure As Gold
Alternate splicing
Stable (quiescent)
missense mutation
Purines
47. A malfunction of mismatch repair (MUt L etc..)
RNA processing in eukaryotes occurs
Hereditary non polyposis colorectal cancer
Covalent alterations
tRNA Structure
48. Trimming removal of n or c terminal propeptides from zymogens to generate mature proteinds
mRNA is syntehsized in which direction?
Post - translational modifications
Vincristine/Vinblastine
Total energy expenditure requirement for translocation
49. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)
Rough ER
Primase
commaless - non - overlapping
DNA ligase
50. Change resulting in early stop codon
unambiguous
nonsense
desmin
Translocation