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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. Proline - glycine
DNA ligase
Common amino acids in elastin
dyenin
Where do introns and exons stay
2. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly
Labile
Immunohistochemical stains vimentin
microtubule
Outside the cell what processing must be done in procolalgen
3. 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
Fluoroquinolones
Proofreading function in eukaryotic RNA
tRNA Structure
tRNA
4. Hydroxy proline and hydroxylysine
nucleosid
Double Strand DNA repair
Kartageners syndrome
Hydroxylation of which amino acids are attached to Glycine to form collagen
5. Y shaped region along DNA template where leading and lagging strands are syntehsized
Which end of the nucleotide has the triphosphate
What does the hydroxylation of proline and lysine require
Replication fork
capped and tail transcript is called
6. Unattached to any membrane; site of cytosolic and organeller prtoeins
Oubain
Free ribosomes
Paclitaxil
Covalent alterations
7. Rampant - Massive - TIny rRNA is most common - then mRNA and then tRNA
Hereditary non polyposis colorectal cancer
Which is the most and least abundant type of RNA
Tumor Suppressors
Macrolides
8. Intervening noncoding segments of DNA
Silencer
tRNA activation
Introns
Heterochromatin
9. The 3 prime hydroxyl of the nascent chain is the target
Ehlers Danlos
mRNA is syntehsized in which direction?
Which end of a growing DNA strand is the target
Deamination of cytosine makes
10. Strethchy protein within lungs - large artiers - elastic liaments - vocal cords - ligamenta flava)
Cyclins
Common amino acids in elastin
Elastin
Labile
11. Prophas - metaphase - anaphase telophase
Functional organization of the gene
Order of mitosis
capped and tail transcript is called
Exons
12. Site where negative regulators bind
actin and myosin
Hereditary non polyposis colorectal cancer
Single Strand DNA Repair types
Silencer
13. Inhibits ribonucleotide reductase
Collagen
hydroxyurea
Which end of the nucleotide has the triphosphate
Enhancer
14. A site - incoming aminoacyl tRNA - Psite accomodates growing Peptide - E site holds EmplytRNA as it exits
universal
Going APE
origin of replication
Methotrexate
15. Particular sequnece in genomre where DNA replication begins. May be single (prokaryotes) or multiple (eukaryotes)
the tRNA- amino acid bond
Initial transcript without processing is known as
Kartageners syndrome
origin of replication
16. Inhbits RNA pol II (found in death cap mushrooms)
nucleosid
alpha amintin
Aminoglycosides
Methotrexate
17. Asymmetric fluid bilayer - contains - cholesterol - phospholipids - sphingoplipids - glycolipids - and protiends
Plasma membrane composition
nucleotide
transition
Double Strand DNA repair
18. Faulty collagen synthesis causing 1) hyperextensible skin 2) tendency to bleed 3) hypermobile joints
Loading tRNA on to ribosome energy requirement
Ehlers Danlos
Glycosolation
Neurofilaments
19. Contain the actual genetic information coding for protein
Exons
Higher the cholesterol or long saturated fatty acid content
Osteogenesis Imperfecta
Ehlers Danlos
20. Substituting a purine for a pyrimdine or vice versa
Protein synthesis initiation
Permanent cells
Nucleotide excision repair
transversion
21. The N to C
GFAP
mRNA start codons
Ehlers Danlos
Protein synthesis is in which direction
22. RNA polymerase I makes rRNA - RNA pol II makes mRNA - RNA pol III makes tRNA
Stable (quiescent)
Collagedn synthesis where?
Sodium K ATPase
RNA polymerases in eukaryotes
23. Each codon specifies only 1 amino acid
Cyclins
alpha amintin
unambiguous
Oubain
24. Be So Totatally Cool Read Books (bOne - CarTWOlage - Threeticular - Type IV under the floor)
Nucleotide excision repair
Collagen
Axonemal dyenin
pyrimadines
25. Has enough energy to created the peptide bond
commaless - non - overlapping
In eukaryotes the starting amino acid is...
Single Strand DNA Repair types
the tRNA- amino acid bond
26. G1 - S - G2 - Mitosis
Euchromatin
Cell cycle order
Elongation
helicase
27. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments
intermediate filaments
Covalent alterations
Methotrexate
methionine is only encoded by
28. CCA AT 3 PRIME END
Cholchicine
Axonemal dyenin
Alports syndrome
White codon is at the 3 prime end of a tRNA
29. Checkpoints control transition between phases of cell cycle. regulated by cyclins - CDKs and tumor suppressors. Mitosis (shortest phse)
Cell cycle
Neurofilaments
promoter
tRNA activation
30. Inhibits 50S peptidyl transferase
Type IV collagen is an important structural component of...
Nucleotide excision repair
Going APE
Chloramphenicol
31. (A - G) 2 rings Pure As Gold
Purines
transversion
Proofreading function in eukaryotic RNA
GFAP
32. Exocytose procollagen into extracellylar sace
Protein synthesis is in which direction
Chloramphenicol
Excocytosis of collagen
Promoter mutation
33. Immotile cilia due to a dyenin arm defect. Results in male nad female inferticility (sperm immotile) - bronchiectasis - and recurrent sinusisits - associated with situs inversus
mRNA stop codons
missense mutation
transition
Kartageners syndrome
34. Codes for formyl methionine (f - Met)
RNA polymerases in eukaryotes
AUG codes For what in prokaryotes
tRNA gripping and going places
Oubain
35. Retrograde to microtubules
DNA topoisomerases
Step one of RNA processing
Kartageners syndrome
dyenin
36. Close to - far from or even within (in an intron) the gene whose expression it regulates
Enhancers and silencer may be located_____
frame shift
6MP
DNA topoisomerases
37. 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
Elongation
purines
Stable (quiescent)
Which is the most and least abundant type of RNA
38. DNA And RNA synthesized in the 5-3 direction
histone octamer names
RNA polymerases in eukaryotes
Vincristine/Vinblastine
DNA/RNA/Protein syntesis direction
39. Trimming removal of n or c terminal propeptides from zymogens to generate mature proteinds
Hereditary non polyposis colorectal cancer
Promoter mutation
Post - translational modifications
Non homologous end joining
40. Neurons
Aminoacylt - tRNA synthetase
Fluoroquinolones
Smooth ER
Neurofilaments
41. H1
pyrimadines
Associations of Ehlers Danlos
Osteogenesis Imperfecta
The only histone not on the core
42. Genetic bone disorder (brittle bone disease) type 1 colalgen - fractures (during birth) 2) Blue sclerae 3) hearing loss 4) dental imperfections 1:10000 may be confused with child abuse
Protein synthesis initiation
chromatin structure
Osteogenesis Imperfecta
Protein synthesis is in which direction
43. Specific endonucleases release the oligonucleotide containing damaged bases. DNA polymerase and logase fill and resealt eh gap
kinesin
universal
Primase
Nucleotide excision repair
44. Lysine/hydroxylysine and combines to form collagen
Covalent alterations
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
Where do introns and exons stay
Tropocollagen cross links between_____ to form____
45. Scrutinizes aa before and after it binds to tRNA. If incorrect bond is hydrolyzed.
mRNA start codons
C- G bond
intermediate filaments
Aminoacylt - tRNA synthetase
46. Prevents stranges from reannealing
Ehlers Danlos
single stranded binding proteinds
Proteosomal degradation
Rough ER
47. One codon AUG
methionine is only encoded by
Griseofulvin
Alports syndrome
Macrolides
48. Stretch of DNA that alters gene expression by binding transcription factors
Which end of the tRNA is the amino acid bound to?
A- T
Enhancer
Protein synthesis initiation
49. Attachment of ubiquitin to defective proteinds to tag them for breakdown
Molecular motor protiesn
histone octamer names
Proteosomal degradation
helicase
50. Uracil
Deamination of cytosine makes
methionine is only encoded by
tRNA gripping and going places
promoter