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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. Elastase
Tetracyclines
Prokaryote RNA pol
Elastin is broken down by
promoter
2. Uracil
Deamination of cytosine makes
commaless - non - overlapping
Ribonucleotides are synthesized first and convertec to deoxyribonuclotides by
silent mutation
3. Prophas - metaphase - anaphase telophase
Clindamycin
Cyclins
chromatin structure
Order of mitosis
4. ATP ase that links peripheral 9 doublets and causes bending of cilium by differential sliding of doublets
Cilia structure
Pyrimidines
Glycosolation
Axonemal dyenin
5. H1 string
Collagen
What ties teh nucleosome together
Proofreading function in eukaryotic RNA
hydroxyurea
6. Read froma fixed starting point as a continous sequenecs of bases
Single Strand DNA Repair types
capped and tail transcript is called
commaless - non - overlapping
Introns
7. Anterograde to microtubule
purines
kinesin
Griseofulvin
Exons
8. RNA polymerase I makes rRNA - RNA pol II makes mRNA - RNA pol III makes tRNA
Molecular motor protiesn
RNA polymerases in eukaryotes
transversion
Cyclins
9. Bm - kidney - ears and eyes
Base excision repair
mRNA start codons
Guanine has a
Type IV collagen is an important structural component of...
10. 9+2 arrangement of microtubules -
Cilia structure
Chloramphenicol
origin of replication
Methotrexate
11. Specific endonucleases release the oligonucleotide containing damaged bases. DNA polymerase and logase fill and resealt eh gap
Where do introns and exons stay
Aminoglycosides
DNA topoisomerases
Nucleotide excision repair
12. Neurons
Neurofilaments
polyadenylation does/does not require a template
Guanine has a
Functional organization of the gene
13. Prevents stranges from reannealing
DNA pol I
single stranded binding proteinds
Collagedn synthesis where?
Outside the cell what processing must be done in procolalgen
14. Splicing out of introns
Step Three of RNA processing
Macrolides
Functional organization of the gene
intermediate filaments
15. Site where negative regulators bind
mRNA start codons
Silencer
Termination
Purines
16. 75-90 nucleotides - 2ary structure cloverleaf form anticodon end is opposite 3 prime aminoacyl end
Enhancer
Chediak Higashi syndrome
Promoter mutation
tRNA Structure
17. Rampant - Massive - TIny rRNA is most common - then mRNA and then tRNA
Oubain
Which is the most and least abundant type of RNA
promoter
tRNA Structure
18. Proline - glycine
Outside the cell what processing must be done in procolalgen
Step Three of RNA processing
Common amino acids in elastin
Covalent alterations
19. A malfunction of mismatch repair (MUt L etc..)
Hereditary non polyposis colorectal cancer
Immunohistochemical stains vimentin
aminoacyl - tRNA synthetase and binding of charged tRNA to the codon
tRNA activation
20. Three amino acids necessary for purine synthesis= glutamine - aspartate and glycine
RNA processing in eukaryotes occurs
Gag on pure gold
DNA pol I
promoter
21. Negatively charged DNA loops twice around histone octamers create a nucloesome bead.
Clindamycin
pyrimadines
chromatin structure
Loading tRNA on to ribosome energy requirement
22. The 3 prime hydroxyl of the nascent chain is the target
tRNA Structure
Proofreading function in eukaryotic RNA
Outside the cell what processing must be done in procolalgen
Which end of a growing DNA strand is the target
23. P53 and RB normally inhibit g1 to S progression
Griseofulvin
Which end of the tRNA is the amino acid bound to?
desmin
Tumor Suppressors
24. 5 prime to 3 prime
Enhancers and silencer may be located_____
DNA/RNA/Protein syntesis direction
Excocytosis of collagen
mRNA is syntehsized in which direction?
25. Cylindrical structure composed of helical array of plymerized dimers of alpha and beta tubulin - flagella - cilia - mitotic spindle - grows slowly collapses quickly
Eukaroytes
Elongation
microtubule
Tetracyclines
26. Checkpoints control transition between phases of cell cycle. regulated by cyclins - CDKs and tumor suppressors. Mitosis (shortest phse)
Tumor Suppressors
Cell cycle
Where do introns and exons stay
mRNA stop codons
27. Must be both activated and inactivated for cell cycle to progress
Cholchicine
Alports syndrome
Cyclin - CDK
Steps in splicing
28. Inhibits ribonucleotide reductase
Non homologous end joining
Deamination of cytosine makes
hydroxyurea
GFAP
29. Muscle
tRNA
desmin
Rough ER
Proteosomal degradation
30. Capping on 5 prime end (7 methylguanosine) -
Cholchicine
Eukaroytes
Step one of RNA processing
Deamination of cytosine makes
31. G1 - S - G2 - Mitosis
Axonemal dyenin
Mismatch repair
Cell cycle order
Which end of a growing DNA strand is the target
32. 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
trimethoprim
helicase
Protein synthesis is in which direction
tRNA
33. Scrutinizes aa before and after it binds to tRNA. If incorrect bond is hydrolyzed.
methionine is only encoded by
Aminoacylt - tRNA synthetase
Tropocollagen cross links between_____ to form____
mRNA is syntehsized in which direction?
34. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)
Free ribosomes
Rough ER
purines
Kartageners syndrome
35. Asymmetric fluid bilayer - contains - cholesterol - phospholipids - sphingoplipids - glycolipids - and protiends
DNA topoisomerases
Plasma membrane composition
Griseofulvin
Replication fork
36. AD and AR- associated iwth joint dislocation - berry aneurysms - organ rupture
White codon is at the 3 prime end of a tRNA
CDKs
frame shift
Associations of Ehlers Danlos
37. MRNA
Rough ER
6MP
Collagen
capped and tail transcript is called
38. Faulty collagen synthesis causing 1) hyperextensible skin 2) tendency to bleed 3) hypermobile joints
Ehlers Danlos
mRNA start codons
kinesin
Collagen
39. Bind 30S subunit preventing attachment of aminoacyl - tRNA
Thymine has a
Tetracyclines
single stranded binding proteinds
Elastase is inhibited by
40. Methyl THYmine has a meTHYl
Prokaryotes
polyadenylation does/does not require a template
Translocation
Thymine has a
41. Same aa often base change in 3rd position of codon
Cyclins
hydroxyurea
silent mutation
Free ribosomes
42. Bind 50S blocking translocation
Macrolides
Chediak Higashi syndrome
Kartageners syndrome
Loading tRNA on to ribosome energy requirement
43. Vimentin - desmin - cytockeratin - glial fibrillary acid proteins - neurofilaments
Smooth ER
Prokaryotes
intermediate filaments
Rough ER
44. Change resulting in misreading of all nucleotides downstream - usually resulting in a truncated non functional protien
methionine is only encoded by
Cilia structure
Sodium K ATPase
frame shift
45. Regulatory proteins that control cell cycle events; phase specific; activated CDKs
RNA processing in eukaryotes occurs
Immunohistochemical stains vimentin
Cyclins
Elastin
46. 1 RNA polymerase (multisubunite complex) makes all 3 kinds of RNA
Hydroxylation of which amino acids are attached to Glycine to form collagen
missense mutation
Prokaryote RNA pol
mRNA stop codons
47. Each codon specifies only 1 amino acid
alpha amintin
unambiguous
Covalent alterations
Alports syndrome
48. Create a nick in the helix to relieve supercoils created during replication
Initial transcript without processing is known as
DNA topoisomerases
Tumor Suppressors
Going APE
49. Inhibits dihydrofolate reductase down thymine
Methotrexate
silent mutation
Order of mitosis
Non homologous end joining
50. Attachment of ubiquitin to defective proteinds to tag them for breakdown
polyadenylation does/does not require a template
Associations of Ehlers Danlos
Proteosomal degradation
degenerate or redundant