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. The 5prime end (energy for the bond)
Which end of the nucleotide has the triphosphate
trimethoprim
Cilia structure
silent mutation
2. Introns stay In the nucleus whereas EXons EXit and are EXpressed
What ties teh nucleosome together
Where do introns and exons stay
RNA polymerases in eukaryotes
Hereditary non polyposis colorectal cancer
3. AD and AR- associated iwth joint dislocation - berry aneurysms - organ rupture
Cilia structure
Associations of Ehlers Danlos
Macrolides
purines
4. 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
Enhancer
cytokeratin
transversion
tRNA
5. Inhibit formation of the initation complex and cause misreading of mRNA
tRNA activation
dyenin
Mebendazole/thiabendazole
Aminoglycosides
6. Inhibits bacterials dihydrofolate reducatese down thymine
trimethoprim
Termination
Glycosolation
Hydroxylation of which amino acids are attached to Glycine to form collagen
7. Specific endonucleases release the oligonucleotide containing damaged bases. DNA polymerase and logase fill and resealt eh gap
Guanine has a
Where do introns and exons stay
Which end of the tRNA is the amino acid bound to?
Nucleotide excision repair
8. Inhibit DNA gyrase (specific prokaryotic topoisomerase)
methionine is only encoded by
Fluoroquinolones
Paclitaxil
tRNA gripping and going places
9. Inhibits the atpase which increases intracellular sodium which increases intracellular calcium increases cardiaccontractility
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
Free ribosomes
Digoxin (cardiac glycosides)
Step Three of RNA processing
10. Attachment of ubiquitin to defective proteinds to tag them for breakdown
Covalent alterations
Proteosomal degradation
Replication fork
tRNA activation
11. Antigout - acts on mts
White codon is at the 3 prime end of a tRNA
microtubule
Cholchicine
DNA topoisomerases
12. More than 1 codon may code for the same amino acid
microtubule
Macrolides
missense mutation
degenerate or redundant
13. VItamin C
Guanine has a
Oubain
What does the hydroxylation of proline and lysine require
Hydroxylation of which amino acids are attached to Glycine to form collagen
14. 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
helicase
Hydroxylation of which amino acids are attached to Glycine to form collagen
Steps in splicing
trimethoprim
15. Bind 50S blocking translocation
DNA ligase
What type of collagen is most affected in Ehlers Danlos
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
Macrolides
16. Scrutinizes aa before and after it binds to tRNA. If incorrect bond is hydrolyzed.
mRNA is syntehsized in which direction?
The only histone not on the core
What type of collagen is most affected in Ehlers Danlos
Aminoacylt - tRNA synthetase
17. Capping on 5 prime end (7 methylguanosine) -
The only histone not on the core
methionine is only encoded by
Step one of RNA processing
Axonemal dyenin
18. Phosphorylation - glycosloation - hyderoxylation
origin of replication
Mismatch repair
Covalent alterations
Steps in splicing
19. 2 H bonds greater GC content greater melting point
Protein synthesis is in which direction
RNA polymerases in eukaryotes
A- T
Neurofilaments
20. Less condensed - transciptionally active=eu truly transcobed
Step one of RNA processing
Euchromatin
Eukaroytes
Initial transcript without processing is known as
21. H1
5FU
The only histone not on the core
DNA pol III
Double Strand DNA repair
22. ATP
mRNA stop codons
Prokaryotes
tRNA activation
Plasma membrane composition
23. Brings together 2 ends of DNA fragments no requirement for homology
Alports syndrome
Non homologous end joining
Enhancers and silencer may be located_____
mRNA is syntehsized in which direction?
24. HS1 - HSB - H2 - H4
DNA pol III
6MP
universal
histone octamer names
25. Inhibits by binding to the potassium side
Promoter mutation
Oubain
mRNA is syntehsized in which direction?
Free ribosomes
26. Regulatory proteins that control cell cycle events; phase specific; activated CDKs
Cyclins
silent mutation
Neurofilaments
Eukaroytes
27. No proofreading function but can initiate chains. RNA poymerase II opens DNA at promoter site
Double Strand DNA repair
Cell cycle order
What ties teh nucleosome together
Proofreading function in eukaryotic RNA
28. Base+ribose+phosphate linked by a phosphodiester bond
nucleotide
Alports syndrome
Osteogenesis Imperfecta
Type IV collagen is an important structural component of...
29. Intervening noncoding segments of DNA
mRNA start codons
histone octamer names
chromatin structure
Introns
30. Trimming removal of n or c terminal propeptides from zymogens to generate mature proteinds
Post - translational modifications
A- T
dyenin
Loading tRNA on to ribosome energy requirement
31. Makes an RNA primer on which DNA polymerase II can initiate replication
Neurofilaments
Aminoglycosides
Tumor Suppressors
Primase
32. Inhibits thymidylate synthase down thymine
Glycosolation
5FU
transversion
actin and myosin
33. Base + ribose
Guanine has a
Loading tRNA on to ribosome energy requirement
nucleosid
What ties teh nucleosome together
34. Close to - far from or even within (in an intron) the gene whose expression it regulates
Enhancers and silencer may be located_____
Oubain
Ehlers Danlos
Replication fork
35. Binds 50S blocking translocation
Clindamycin
Purines
methionine is only encoded by
Hereditary non polyposis colorectal cancer
36. 9+2 arrangement of microtubules -
Covalent alterations
Collagedn synthesis where?
commaless - non - overlapping
Cilia structure
37. A site - incoming aminoacyl tRNA - Psite accomodates growing Peptide - E site holds EmplytRNA as it exits
origin of replication
Guanine has a
Going APE
Primase
38. Lysine/hydroxylysine and combines to form collagen
6MP
Tropocollagen cross links between_____ to form____
Fluoroquinolones
desmin
39. Made from IMP precursor
pyrimadines
Deamination of cytosine makes
purines
Outside the cell what processing must be done in procolalgen
40. Uracil
DNA pol I
trimethoprim
Cyclin - CDK
Deamination of cytosine makes
41. Codes for formyl methionine (f - Met)
AUG codes For what in prokaryotes
Higher the cholesterol or long saturated fatty acid content
kinesin
promoter
42. The N to C
Protein synthesis is in which direction
Collagen
White codon is at the 3 prime end of a tRNA
Covalent alterations
43. Unattached to any membrane; site of cytosolic and organeller prtoeins
chromatin structure
Free ribosomes
Deamination of cytosine makes
helicase
44. 4 high enrgy bonds
tRNA Structure
Heterochromatin
Higher the cholesterol or long saturated fatty acid content
Total energy expenditure requirement for translocation
45. Particular sequnece in genomre where DNA replication begins. May be single (prokaryotes) or multiple (eukaryotes)
origin of replication
Thymine has a
Nucleotide excision repair
Pyrimidines
46. Tansport cellular cargo toward opposite ends of microtubule tracks
Labile
Aminoacylt - tRNA synthetase
Molecular motor protiesn
promoter
47. Responsible for the accuracy of amino acid selection
Neurofilaments
Pyrimidines
hydroxyurea
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
48. Y shaped region along DNA template where leading and lagging strands are syntehsized
Replication fork
Macrolides
Prokaryote RNA pol
nucleotide
49. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine
capped and tail transcript is called
Higher the cholesterol or long saturated fatty acid content
Gag on pure gold
DNA pol I
50. Has enough energy to created the peptide bond
Thymine has a
Alports syndrome
Termination
the tRNA- amino acid bond