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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. Y shaped region along DNA template where leading and lagging strands are syntehsized
commaless - non - overlapping
Smooth ER
Replication fork
Prokaryote RNA pol
2. Same aa often base change in 3rd position of codon
silent mutation
Termination
Ehlers Danlos
Proofreading function in eukaryotic RNA
3. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly
Free ribosomes
microtubule
Chloramphenicol
In eukaryotes the starting amino acid is...
4. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)
Guanine has a
Elongation
Rough ER
desmin
5. Muscle
Kartageners syndrome
desmin
methionine is only encoded by
Cell cycle order
6. 2 H bonds greater GC content greater melting point
A- T
Elastin is broken down by
5FU
Primase
7. P53 and RB normally inhibit g1 to S progression
CDKs
Sodium K ATPase
polyadenylation does/does not require a template
Tumor Suppressors
8. Elastase
RNA processing in eukaryotes occurs
Elastin is broken down by
Cyclins
Glycosolation
9. Microvilli - muscle contraction - cytokinesis - adhering juntions
actin and myosin
What does the hydroxylation of proline and lysine require
Tropocollagen cross links between_____ to form____
Thymine has a
10. Type III
Thymine has a
What type of collagen is most affected in Ehlers Danlos
Enhancers and silencer may be located_____
histone octamer names
11. Bm - kidney - ears and eyes
Tumor Suppressors
Type IV collagen is an important structural component of...
Higher the cholesterol or long saturated fatty acid content
The only histone not on the core
12. Inhibits bacterials dihydrofolate reducatese down thymine
trimethoprim
White codon is at the 3 prime end of a tRNA
tRNA aminoacylation
Vincristine/Vinblastine
13. 4 high enrgy bonds
Cell cycle order
Total energy expenditure requirement for translocation
the tRNA- amino acid bond
Ehlers Danlos
14. Base+ribose+phosphate linked by a phosphodiester bond
Cyclin - CDK
Which end of a growing DNA strand is the target
nucleotide
Excocytosis of collagen
15. Capping on 5 prime end (7 methylguanosine) -
Functional organization of the gene
Step one of RNA processing
Introns
DNA ligase
16. Does not
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
Higher the cholesterol or long saturated fatty acid content
commaless - non - overlapping
polyadenylation does/does not require a template
17. Rampant - Massive - TIny rRNA is most common - then mRNA and then tRNA
Replication fork
Which is the most and least abundant type of RNA
Promoter mutation
Cyclin - CDK
18. More than 1 codon may code for the same amino acid
Gag on pure gold
DNA ligase
promoter
degenerate or redundant
19. RNA polymerase I makes rRNA - RNA pol II makes mRNA - RNA pol III makes tRNA
Which end of the nucleotide has the triphosphate
Guanine has a
Paclitaxil
RNA polymerases in eukaryotes
20. Genetic code is conserved throughout evolution
Double Strand DNA repair
Step Three of RNA processing
universal
Common amino acids in elastin
21. Checkpoints control transition between phases of cell cycle. regulated by cyclins - CDKs and tumor suppressors. Mitosis (shortest phse)
GFAP
DNA pol I
helicase
Cell cycle
22. ATP- AMP (2 phosphoanhydride bonds)
tRNA aminoacylation
GFAP
Total energy expenditure requirement for translocation
Base excision repair
23. Inhibit DNA gyrase (specific prokaryotic topoisomerase)
Fluoroquinolones
Proteosomal degradation
unambiguous
Alports syndrome
24. Codes for formyl methionine (f - Met)
microtubule
Higher the cholesterol or long saturated fatty acid content
Permanent cells
AUG codes For what in prokaryotes
25. DNA And RNA synthesized in the 5-3 direction
trimethoprim
universal
Ehlers Danlos
DNA/RNA/Protein syntesis direction
26. Trimming removal of n or c terminal propeptides from zymogens to generate mature proteinds
Fluoroquinolones
Post - translational modifications
Collagen
GFAP
27. 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
nucleotide
Order of mitosis
Base excision repair
hydroxyurea
28. UGA - UAG - UAA
mRNA stop codons
DNA ligase
microtubule
Osteogenesis Imperfecta
29. Antigout - acts on mts
Oubain
Replication fork
Vincristine/Vinblastine
Cholchicine
30. Asymmetric fluid bilayer - contains - cholesterol - phospholipids - sphingoplipids - glycolipids - and protiends
Enhancer
Steps in splicing
Plasma membrane composition
Eukaroytes
31. Nucleotide excision repair - Base Excision repair - Mismath repair
Elongation
Permanent cells
Single Strand DNA Repair types
Protein synthesis initiation
32. Even 40S 60S =80S
Eukaroytes
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
Prokaryote RNA pol
tRNA aminoacylation
33. Inhibits ribonucleotide reductase
kinesin
hydroxyurea
Digoxin (cardiac glycosides)
Axonemal dyenin
34. Cleave terminal regions of procollagen to transform into insoluable tropocolagen
Outside the cell what processing must be done in procolalgen
Eukaroytes
microtubule
cytokeratin
35. RER translation of collagen alpha chains (preprocollagen) usually Gly-X-Y
single stranded binding proteinds
Collagedn synthesis where?
C- G bond
Eukaroytes
36. 5 prime to 3 prime
Where do introns and exons stay
What type of collagen is most affected in Ehlers Danlos
RNA processing in eukaryotes occurs
mRNA is syntehsized in which direction?
37. Made from IMP precursor
purines
Smooth ER
dyenin
promoter
38. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle
capped and tail transcript is called
Pyrimidines
Sodium K ATPase
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
39. Changed aaconservative - new aa is similar in chemical structure
missense mutation
commaless - non - overlapping
Aminoacylt - tRNA synthetase
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
40. Prevents stranges from reannealing
single stranded binding proteinds
Kartageners syndrome
Methotrexate
Hereditary non polyposis colorectal cancer
41. Seals
Which end of a growing DNA strand is the target
Elastase is inhibited by
What ties teh nucleosome together
DNA ligase
42. Must be both activated and inactivated for cell cycle to progress
Cyclin - CDK
desmin
Molecular motor protiesn
Protein synthesis initiation
43. CUT 1 ring Cut the Py
cytokeratin
Non homologous end joining
Pyrimidines
DNA topoisomerases
44. Neurons - skeletal - and cardiac muscle - RBCs
Example of permanent cells
Hydroxylation of which amino acids are attached to Glycine to form collagen
Xeroderma pigmentosum
Proteosomal degradation
45. Cyclin depndent kinases; consituative and inactive
Collagedn synthesis where?
CDKs
transversion
White codon is at the 3 prime end of a tRNA
46. Strethchy protein within lungs - large artiers - elastic liaments - vocal cords - ligamenta flava)
Order of mitosis
Elastin
Oubain
Double Strand DNA repair
47. HS1 - HSB - H2 - H4
Introns
histone octamer names
Common amino acids in elastin
Guanine has a
48. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes
Elastin is broken down by
Stable (quiescent)
Smooth ER
Glycosolation
49. H1 string
GFAP
CDKs
Cilia structure
What ties teh nucleosome together
50. Odd 30S plus 50 S=70S
Elastin
Tumor Suppressors
transition
Prokaryotes