SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine
mRNA start codons
tRNA aminoacylation
Termination
Gag on pure gold
2. Unwinds DNA template at replication fork
missense mutation
6MP
Type IV collagen is an important structural component of...
helicase
3. Tansport cellular cargo toward opposite ends of microtubule tracks
Collagen
Molecular motor protiesn
6MP
CDKs
4. Substituting a pyramidine for a pyrimadine
A- T
CDKs
DNA pol III
transition
5. Specific glycosylases recognize and remove damaged bases - AP endonuclease cuts DNA at pyrimidne site - empty sugar is removed and the gap is filled and resealed
Elastin
Base excision repair
Prokaryotes
actin and myosin
6. Microvilli - muscle contraction - cytokinesis - adhering juntions
helicase
DNA/RNA/Protein syntesis direction
A- T
actin and myosin
7. Unmethylated - newly synthesized string is recognized - mismatched nucleotides are removed and the gap is filled and resealed
microtubule
Post - translational modifications
DNA ligase
Mismatch repair
8. Methionine - which may be removed before translation is completed
Primase
Protein synthesis initiation
Cell cycle
In eukaryotes the starting amino acid is...
9. Close to - far from or even within (in an intron) the gene whose expression it regulates
DNA ligase
Chloramphenicol
Enhancers and silencer may be located_____
Functional organization of the gene
10. Proline - glycine
silent mutation
DNA pol III
Tetracyclines
Common amino acids in elastin
11. 2 H bonds greater GC content greater melting point
Excocytosis of collagen
A- T
Step one of RNA processing
Prokaryotes
12. Made from orogate precuror with PRPP added later
trimethoprim
Sodium K ATPase
pyrimadines
Alports syndrome
13. Neuroglia
Single Strand DNA Repair types
Protein synthesis initiation
Example of permanent cells
GFAP
14. Asymmetric fluid bilayer - contains - cholesterol - phospholipids - sphingoplipids - glycolipids - and protiends
mRNA is syntehsized in which direction?
White codon is at the 3 prime end of a tRNA
Tumor Suppressors
Plasma membrane composition
15. Phosphorylation - glycosloation - hyderoxylation
Primase
capped and tail transcript is called
Which end of the tRNA is the amino acid bound to?
Covalent alterations
16. 1) primary transcript combines with snRNPs and other proteins to form spliceosome 2) lariat shaped intermediate is generated 3) Lariat is removed and released to precisely join 2 exons
The only histone not on the core
Heterochromatin
Steps in splicing
unambiguous
17. Bind 30S subunit preventing attachment of aminoacyl - tRNA
Hereditary non polyposis colorectal cancer
Base excision repair
degenerate or redundant
Tetracyclines
18. Mutation in nucleotide excision repair Dry skin with melanoma and other cancers
Stable (quiescent)
Xeroderma pigmentosum
Replication fork
kinesin
19. Hn RNA
Initial transcript without processing is known as
Prokaryote RNA pol
degenerate or redundant
Neurofilaments
20. Responsible for the accuracy of amino acid selection
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
Thymine has a
Which is the most and least abundant type of RNA
Cholchicine
21. Xlinked recessive IV collagen bm - kidney - ear and eye -- nephritis and defness ocular disturbances
Alports syndrome
single stranded binding proteinds
Plasma membrane composition
promoter
22. 1P blocked by chloramphenicaol and macrolide
Alternate splicing
Translocation
trimethoprim
Guanine has a
23. ATP ase that links peripheral 9 doublets and causes bending of cilium by differential sliding of doublets
Aminoacylt - tRNA synthetase
Enhancer
Order of mitosis
Axonemal dyenin
24. You glyucosolate hte pro - alpha chain lysine resudens and form procollagen (triple helix of alpha chains)
Glycosolation
helicase
missense mutation
Smooth ER
25. 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
RNA processing in eukaryotes occurs
Tumor Suppressors
tRNA
Guanine has a
26. Faulty collagen synthesis causing 1) hyperextensible skin 2) tendency to bleed 3) hypermobile joints
Ehlers Danlos
Neurofilaments
dyenin
mRNA stop codons
27. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)
Rough ER
Cyclins
transversion
trimethoprim
28. The 5prime end (energy for the bond)
Which end of the nucleotide has the triphosphate
Enhancers and silencer may be located_____
Which is the most and least abundant type of RNA
6MP
29. Greater melting temperature lower fluidity
Cholchicine
Digoxin (cardiac glycosides)
pyrimadines
Higher the cholesterol or long saturated fatty acid content
30. Less condensed - transciptionally active=eu truly transcobed
Euchromatin
nucleosid
Chediak Higashi syndrome
Deamination of cytosine makes
31. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end
Collagedn synthesis where?
tRNA Structure
Hydroxylation of which amino acids are attached to Glycine to form collagen
Aminoglycosides
32. One codon AUG
Xeroderma pigmentosum
methionine is only encoded by
Vincristine/Vinblastine
Sodium K ATPase
33. Inhibits dihydrofolate reductase down thymine
Methotrexate
Glycosolation
Kartageners syndrome
actin and myosin
34. Poly adenylation
step two of RNA processing
What type of collagen is most affected in Ehlers Danlos
Single Strand DNA Repair types
desmin
35. Read froma fixed starting point as a continous sequenecs of bases
Single Strand DNA Repair types
Permanent cells
Rough ER
commaless - non - overlapping
36. UGA - UAG - UAA
trimethoprim
Euchromatin
Heterochromatin
mRNA stop codons
37. Remain in G0 regenerate from stem cells
silent mutation
Tetracyclines
Permanent cells
Immunohistochemical stains vimentin
38. CCA AT 3 PRIME END
Type IV collagen is an important structural component of...
Griseofulvin
Base excision repair
White codon is at the 3 prime end of a tRNA
39. More than 1 codon may code for the same amino acid
Cell cycle
Collagen
degenerate or redundant
kinesin
40. Introns stay In the nucleus whereas EXons EXit and are EXpressed
methionine is only encoded by
tRNA aminoacylation
Collagedn synthesis where?
Where do introns and exons stay
41. Antigout - acts on mts
Associations of Ehlers Danlos
Griseofulvin
Aminoglycosides
Cholchicine
42. 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)
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
tRNA gripping and going places
promoter
In eukaryotes the starting amino acid is...
43. AD and AR- associated iwth joint dislocation - berry aneurysms - organ rupture
mRNA is syntehsized in which direction?
Guanine has a
5FU
Associations of Ehlers Danlos
44. Seals
Cholchicine
Heterochromatin
Rough ER
DNA ligase
45. Inhibits ribonucleotide reductase
Glycosolation
Sodium K ATPase
hydroxyurea
histone octamer names
46. P53 and RB normally inhibit g1 to S progression
DNA/RNA/Protein syntesis direction
Tumor Suppressors
Elongation
Collagedn synthesis where?
47. Epithelial cells
cytokeratin
Order of mitosis
Ehlers Danlos
Nucleotide excision repair
48. H1
Purines
nucleotide
Macrolides
The only histone not on the core
49. Must be both activated and inactivated for cell cycle to progress
Proofreading function in eukaryotic RNA
Permanent cells
cytokeratin
Cyclin - CDK
50. Prevents stranges from reannealing
Gag on pure gold
Base excision repair
single stranded binding proteinds
polyadenylation does/does not require a template