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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. Capping on 5 prime end (7 methylguanosine) -
Which end of the tRNA is the amino acid bound to?
Free ribosomes
Step one of RNA processing
A- T
2. HS1 - HSB - H2 - H4
histone octamer names
Silencer
dyenin
A- T
3. Has enough energy to created the peptide bond
Primase
Example of permanent cells
the tRNA- amino acid bond
Tropocollagen cross links between_____ to form____
4. Read froma fixed starting point as a continous sequenecs of bases
Elastin is broken down by
commaless - non - overlapping
Step one of RNA processing
Cyclin - CDK
5. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle
DNA pol I
Common amino acids in elastin
Sodium K ATPase
White codon is at the 3 prime end of a tRNA
6. 1P (blocked by tetracycline)
transversion
Molecular motor protiesn
Loading tRNA on to ribosome energy requirement
tRNA
7. Asymmetric fluid bilayer - contains - cholesterol - phospholipids - sphingoplipids - glycolipids - and protiends
Collagedn synthesis where?
Alternate splicing
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
Plasma membrane composition
8. Intervening noncoding segments of DNA
mRNA start codons
Translocation
Cell cycle
Introns
9. Lysine/hydroxylysine and combines to form collagen
nonsense
Stable (quiescent)
RNA processing in eukaryotes occurs
Tropocollagen cross links between_____ to form____
10. Trimming removal of n or c terminal propeptides from zymogens to generate mature proteinds
Post - translational modifications
Replication fork
Aminoacylt - tRNA synthetase
Glycosolation
11. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments
Chediak Higashi syndrome
intermediate filaments
Mebendazole/thiabendazole
Higher the cholesterol or long saturated fatty acid content
12. Base + ribose
Base excision repair
step two of RNA processing
pyrimadines
nucleosid
13. Inhibits the atpase which increases intracellular sodium which increases intracellular calcium increases cardiaccontractility
Digoxin (cardiac glycosides)
Heterochromatin
Cholchicine
nonsense
14. Introns stay In the nucleus whereas EXons EXit and are EXpressed
microtubule
Enhancer
Where do introns and exons stay
What ties teh nucleosome together
15. Site where negative regulators bind
mRNA start codons
Silencer
pyrimadines
Promoter mutation
16. Seals
DNA ligase
Common amino acids in elastin
missense mutation
Aminoacylt - tRNA synthetase
17. (A - G) 2 rings Pure As Gold
Purines
Axonemal dyenin
Elastin is broken down by
Exons
18. Phosphorylation - glycosloation - hyderoxylation
Covalent alterations
Replication fork
Promoter mutation
nucleosid
19. Muscle
Plasma membrane composition
Covalent alterations
desmin
Total energy expenditure requirement for translocation
20. RNA polymerase I makes rRNA - RNA pol II makes mRNA - RNA pol III makes tRNA
Covalent alterations
polyadenylation does/does not require a template
Exons
RNA polymerases in eukaryotes
21. Epithelial cells
A- T
nucleosid
Permanent cells
cytokeratin
22. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end
Labile
nucleotide
dyenin
tRNA Structure
23. A site - incoming aminoacyl tRNA - Psite accomodates growing Peptide - E site holds EmplytRNA as it exits
Proofreading function in eukaryotic RNA
Going APE
Alternate splicing
Cell cycle order
24. In the nucleus after transcitpion and only processed RNA is transporte out of the nucleus
the tRNA- amino acid bond
Protein synthesis initiation
RNA processing in eukaryotes occurs
Example of permanent cells
25. No proofreading function but can initiate chains. RNA poymerase II opens DNA at promoter site
DNA pol I
Cholchicine
Stable (quiescent)
Proofreading function in eukaryotic RNA
26. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine
Free ribosomes
Immunohistochemical stains vimentin
Double Strand DNA repair
Gag on pure gold
27. Y shaped region along DNA template where leading and lagging strands are syntehsized
Covalent alterations
Tropocollagen cross links between_____ to form____
The only histone not on the core
Replication fork
28. G1 - S - G2 - Mitosis
GFAP
capped and tail transcript is called
Cell cycle order
chromatin structure
29. Non homologous end joining
Proteosomal degradation
Double Strand DNA repair
Mismatch repair
capped and tail transcript is called
30. Tansport cellular cargo toward opposite ends of microtubule tracks
Single Strand DNA Repair types
Thymine has a
Sodium K ATPase
Molecular motor protiesn
31. ATP- AMP (2 phosphoanhydride bonds)
tRNA aminoacylation
purines
Non homologous end joining
Associations of Ehlers Danlos
32. Made from IMP precursor
purines
Hereditary non polyposis colorectal cancer
Cilia structure
Going APE
33. Remain in G0 regenerate from stem cells
single stranded binding proteinds
universal
Protein synthesis initiation
Permanent cells
34. CCA AT 3 PRIME END
DNA pol I
White codon is at the 3 prime end of a tRNA
Enhancer
chromatin structure
35. ATP ase that links peripheral 9 doublets and causes bending of cilium by differential sliding of doublets
Elastase is inhibited by
Going APE
AUG codes For what in prokaryotes
Axonemal dyenin
36. Substituting a purine for a pyrimdine or vice versa
microtubule
Step one of RNA processing
transversion
chromatin structure
37. Unwinds DNA template at replication fork
Prokaryote RNA pol
Cell cycle order
Primase
helicase
38. Substituting a pyramidine for a pyrimadine
transition
Digoxin (cardiac glycosides)
missense mutation
RNA polymerases in eukaryotes
39. Antifungal - act on microtubules
actin and myosin
Chediak Higashi syndrome
Griseofulvin
mRNA stop codons
40. Inhibits by binding to the potassium side
helicase
AUG codes For what in prokaryotes
methionine is only encoded by
Oubain
41. Elastase
Kartageners syndrome
mRNA stop codons
Elastin is broken down by
Euchromatin
42. Blocks denovo purine synthesis
What type of collagen is most affected in Ehlers Danlos
6MP
Post - translational modifications
Excocytosis of collagen
43. Attachment of ubiquitin to defective proteinds to tag them for breakdown
tRNA activation
Proteosomal degradation
Cyclin - CDK
Example of permanent cells
44. Microtubule polymerization defect resulting in lowered phagocytosis. results in recurrent pyogenic infections - partial albinism and peripheral neuropathy
Glycosolation
Cilia structure
Elastin
Chediak Higashi syndrome
45. DNA And RNA synthesized in the 5-3 direction
Guanine has a
Pyrimidines
cytokeratin
DNA/RNA/Protein syntesis direction
46. Neuroglia
mRNA stop codons
White codon is at the 3 prime end of a tRNA
GFAP
Single Strand DNA Repair types
47. Create a nick in the helix to relieve supercoils created during replication
Molecular motor protiesn
DNA topoisomerases
Aminoacylt - tRNA synthetase
Hydroxylation of which amino acids are attached to Glycine to form collagen
48. 5 prime to 3 prime
Enhancer
mRNA is syntehsized in which direction?
helicase
single stranded binding proteinds
49. Inhibits 50S peptidyl transferase
histone octamer names
the tRNA- amino acid bond
Chloramphenicol
Protein synthesis initiation
50. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly
polyadenylation does/does not require a template
AUG codes For what in prokaryotes
microtubule
Mebendazole/thiabendazole