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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. The N to C
Protein synthesis is in which direction
Higher the cholesterol or long saturated fatty acid content
Chloramphenicol
Loading tRNA on to ribosome energy requirement
2. Prophas - metaphase - anaphase telophase
Pyrimidines
nonsense
The only histone not on the core
Order of mitosis
3. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
chromatin structure
Oubain
Sodium K ATPase
4. Elastase
Nucleotide excision repair
Exons
promoter
Elastin is broken down by
5. Microtubule polymerization defect resulting in lowered phagocytosis. results in recurrent pyogenic infections - partial albinism and peripheral neuropathy
Protein synthesis is in which direction
Chediak Higashi syndrome
Silencer
Molecular motor protiesn
6. Nucleotide excision repair - Base Excision repair - Mismath repair
step two of RNA processing
Excocytosis of collagen
Initial transcript without processing is known as
Single Strand DNA Repair types
7. Inhibits the atpase which increases intracellular sodium which increases intracellular calcium increases cardiaccontractility
Cyclins
nonsense
The only histone not on the core
Digoxin (cardiac glycosides)
8. Anti cancer - act on microtubules
commaless - non - overlapping
Osteogenesis Imperfecta
Primase
Vincristine/Vinblastine
9. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)
Rough ER
the tRNA- amino acid bond
What ties teh nucleosome together
Prokaryote RNA pol
10. Has enough energy to created the peptide bond
the tRNA- amino acid bond
Base excision repair
commaless - non - overlapping
Promoter mutation
11. 2 H bonds greater GC content greater melting point
Digoxin (cardiac glycosides)
step two of RNA processing
Collagedn synthesis where?
A- T
12. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end
tRNA Structure
Single Strand DNA Repair types
cytokeratin
Cilia structure
13. Made from orogate precuror with PRPP added later
pyrimadines
DNA pol I
Non homologous end joining
Primase
14. Inhibits ribonucleotide reductase
Total energy expenditure requirement for translocation
hydroxyurea
Immunohistochemical stains vimentin
Enhancers and silencer may be located_____
15. HS1 - HSB - H2 - H4
Introns
actin and myosin
histone octamer names
desmin
16. Epithelial cells
intermediate filaments
cytokeratin
Osteogenesis Imperfecta
nucleotide
17. Even 40S 60S =80S
Immunohistochemical stains vimentin
mRNA start codons
Eukaroytes
White codon is at the 3 prime end of a tRNA
18. Does not
alpha amintin
What ties teh nucleosome together
Fluoroquinolones
polyadenylation does/does not require a template
19. Inhibits 50S peptidyl transferase
Elongation
nucleotide
Exons
Chloramphenicol
20. Must be both activated and inactivated for cell cycle to progress
Cyclin - CDK
Excocytosis of collagen
tRNA activation
Chediak Higashi syndrome
21. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine
Griseofulvin
Gag on pure gold
Double Strand DNA repair
Glycosolation
22. Asymmetric fluid bilayer - contains - cholesterol - phospholipids - sphingoplipids - glycolipids - and protiends
Plasma membrane composition
Digoxin (cardiac glycosides)
Primase
commaless - non - overlapping
23. Read froma fixed starting point as a continous sequenecs of bases
DNA ligase
commaless - non - overlapping
Griseofulvin
In eukaryotes the starting amino acid is...
24. Never go to Go divide rapidly with short G1 bone marrow - gut epithelium - skin - hair follicles
chromatin structure
dyenin
Steps in splicing
Labile
25. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly
microtubule
Euchromatin
Permanent cells
Example of permanent cells
26. Inhbits RNA pol II (found in death cap mushrooms)
promoter
alpha amintin
Purines
nucleotide
27. Site of dteroid synthesis and detoxification of druigs and poisons (liver hepatocytes and steroid horomore adrenal cortex)
pyrimadines
Smooth ER
silent mutation
Primase
28. Close to - far from or even within (in an intron) the gene whose expression it regulates
Chediak Higashi syndrome
chromatin structure
Permanent cells
Enhancers and silencer may be located_____
29. Mutation in nucleotide excision repair Dry skin with melanoma and other cancers
trimethoprim
Xeroderma pigmentosum
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
Total energy expenditure requirement for translocation
30. Poly adenylation
step two of RNA processing
Base excision repair
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
Introns
31. Enter G1 from G0 when stimulated Hepatocytes/lymphocytes
Stable (quiescent)
Collagen
Xeroderma pigmentosum
histone octamer names
32. The 3 prime end
Which end of the tRNA is the amino acid bound to?
promoter
degenerate or redundant
Griseofulvin
33. Inhibit formation of the initation complex and cause misreading of mRNA
What type of collagen is most affected in Ehlers Danlos
What ties teh nucleosome together
intermediate filaments
Aminoglycosides
34. Y shaped region along DNA template where leading and lagging strands are syntehsized
Order of mitosis
Replication fork
Prokaryote RNA pol
trimethoprim
35. Phosphorylation - glycosloation - hyderoxylation
Mismatch repair
methionine is only encoded by
Covalent alterations
single stranded binding proteinds
36. Less condensed - transciptionally active=eu truly transcobed
Euchromatin
Elastin
tRNA Structure
DNA pol III
37. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments
intermediate filaments
Prokaryote RNA pol
What ties teh nucleosome together
RNA polymerases in eukaryotes
38. Anit helminth - act on microtubules
Pyrimidines
intermediate filaments
Mebendazole/thiabendazole
degenerate or redundant
39. 5 prime to 3 prime
Elastin
A- T
Plasma membrane composition
mRNA is syntehsized in which direction?
40. The 5prime end (energy for the bond)
Protein synthesis initiation
Which end of the nucleotide has the triphosphate
C- G bond
tRNA
41. Microvilli - muscle contraction - cytokinesis - adhering juntions
Tetracyclines
purines
Digoxin (cardiac glycosides)
actin and myosin
42. Aminoacyl - tRNA binds to A site 2) peptidyltransferase catalyzes peptide bond formation transfers growing polypeptie to amino acid in A site 3) ribosome advances 3 nucleotides toward the 3 prime end of RNA moving peptiydyl RNA to P site
Labile
Macrolides
Elongation
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
43. MRNA
Enhancer
capped and tail transcript is called
Associations of Ehlers Danlos
frame shift
44. Muscle
tRNA aminoacylation
Heterochromatin
Digoxin (cardiac glycosides)
desmin
45. Contain the actual genetic information coding for protein
Exons
CDKs
Cell cycle
Example of permanent cells
46. Intervening noncoding segments of DNA
desmin
Tetracyclines
Introns
Euchromatin
47. Remain in G0 regenerate from stem cells
Termination
origin of replication
Permanent cells
desmin
48. UGA - UAG - UAA
mRNA stop codons
Osteogenesis Imperfecta
Type IV collagen is an important structural component of...
Hereditary non polyposis colorectal cancer
49. Made from IMP precursor
transversion
purines
Cyclins
Gag on pure gold
50. Changed aaconservative - new aa is similar in chemical structure
missense mutation
Enhancer
Type IV collagen is an important structural component of...
Prokaryotes