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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. Tansport cellular cargo toward opposite ends of microtubule tracks
Molecular motor protiesn
Kartageners syndrome
universal
CDKs
2. Elastase
Purines
Elastin is broken down by
alpha amintin
Rough ER
3. Checkpoints control transition between phases of cell cycle. regulated by cyclins - CDKs and tumor suppressors. Mitosis (shortest phse)
Aminoglycosides
Cyclin - CDK
Free ribosomes
Cell cycle
4. Completed protein is released from ribosme through simple hydrolosis and dissociates
Termination
Clindamycin
Common amino acids in elastin
Loading tRNA on to ribosome energy requirement
5. Bind 50S blocking translocation
Initial transcript without processing is known as
Macrolides
Sodium K ATPase
Collagen
6. Does not
silent mutation
polyadenylation does/does not require a template
GFAP
Heterochromatin
7. Regulatory proteins that control cell cycle events; phase specific; activated CDKs
Cyclins
degenerate or redundant
Aminoglycosides
capped and tail transcript is called
8. Prophas - metaphase - anaphase telophase
Order of mitosis
Oubain
Double Strand DNA repair
The only histone not on the core
9. Odd 30S plus 50 S=70S
Example of permanent cells
origin of replication
Total energy expenditure requirement for translocation
Prokaryotes
10. Poly adenylation
Which end of a growing DNA strand is the target
step two of RNA processing
Loading tRNA on to ribosome energy requirement
Outside the cell what processing must be done in procolalgen
11. Brings together 2 ends of DNA fragments no requirement for homology
Non homologous end joining
Free ribosomes
Permanent cells
Covalent alterations
12. Negatively charged DNA loops twice around histone octamers create a nucloesome bead.
chromatin structure
Alternate splicing
Introns
DNA pol I
13. Activated by GTP hydrolosis initiation factors help assembel the 40 S ribosomal subunites with the initiatior tRNA and are released whent he mRNA and the ribosomal subunit assemple with the complex
alpha amintin
helicase
Paclitaxil
Protein synthesis initiation
14. No proofreading function but can initiate chains. RNA poymerase II opens DNA at promoter site
Termination
transversion
Proofreading function in eukaryotic RNA
Neurofilaments
15. Changed aaconservative - new aa is similar in chemical structure
missense mutation
Replication fork
helicase
Macrolides
16. Inhibits the atpase which increases intracellular sodium which increases intracellular calcium increases cardiaccontractility
Exons
Initial transcript without processing is known as
Digoxin (cardiac glycosides)
Tropocollagen cross links between_____ to form____
17. Xlinked recessive IV collagen bm - kidney - ear and eye -- nephritis and defness ocular disturbances
Alports syndrome
step two of RNA processing
mRNA stop codons
Tetracyclines
18. Immotile cilia due to a dyenin arm defect. Results in male nad female inferticility (sperm immotile) - bronchiectasis - and recurrent sinusisits - associated with situs inversus
Eukaroytes
What does the hydroxylation of proline and lysine require
Kartageners syndrome
intermediate filaments
19. Stretch of DNA that alters gene expression by binding transcription factors
Step Three of RNA processing
Enhancer
Going APE
DNA pol I
20. Scrutinizes aa before and after it binds to tRNA. If incorrect bond is hydrolyzed.
Heterochromatin
Aminoacylt - tRNA synthetase
DNA pol III
Cell cycle order
21. Hydroxy proline and hydroxylysine
Heterochromatin
Total energy expenditure requirement for translocation
kinesin
Hydroxylation of which amino acids are attached to Glycine to form collagen
22. Neurons
step two of RNA processing
Elongation
Cyclins
Neurofilaments
23. ATP- AMP (2 phosphoanhydride bonds)
Permanent cells
CDKs
Associations of Ehlers Danlos
tRNA aminoacylation
24. Anit helminth - act on microtubules
Mebendazole/thiabendazole
silent mutation
helicase
What type of collagen is most affected in Ehlers Danlos
25. A malfunction of mismatch repair (MUt L etc..)
trimethoprim
Hereditary non polyposis colorectal cancer
Associations of Ehlers Danlos
Guanine has a
26. Each codon specifies only 1 amino acid
Collagen
Functional organization of the gene
actin and myosin
unambiguous
27. GTP
actin and myosin
Elastin is broken down by
commaless - non - overlapping
tRNA gripping and going places
28. Inhibits ribonucleotide reductase
Alternate splicing
Kartageners syndrome
hydroxyurea
tRNA aminoacylation
29. A site - incoming aminoacyl tRNA - Psite accomodates growing Peptide - E site holds EmplytRNA as it exits
Mismatch repair
Enhancer
Going APE
Free ribosomes
30. Base + ribose
Purines
nucleosid
hydroxyurea
Double Strand DNA repair
31. Alpha 1 antitrypisn
Proteosomal degradation
Elastase is inhibited by
alpha amintin
Guanine has a
32. Retrograde to microtubules
methionine is only encoded by
dyenin
Single Strand DNA Repair types
Cell cycle
33. Neuroglia
Cyclins
GFAP
Heterochromatin
Double Strand DNA repair
34. Close to - far from or even within (in an intron) the gene whose expression it regulates
Ehlers Danlos
DNA pol III
kinesin
Enhancers and silencer may be located_____
35. Site of secretory protiens (mucus secreting goblet cells and antibody secreting cells)
Which end of the tRNA is the amino acid bound to?
Rough ER
C- G bond
Hereditary non polyposis colorectal cancer
36. Read froma fixed starting point as a continous sequenecs of bases
desmin
Ehlers Danlos
commaless - non - overlapping
Enhancers and silencer may be located_____
37. Blocks denovo purine synthesis
missense mutation
6MP
tRNA aminoacylation
RNA polymerases in eukaryotes
38. Inhibits 50S peptidyl transferase
Chloramphenicol
Exons
Thymine has a
capped and tail transcript is called
39. 5 prime to 3 prime
Oubain
mRNA is syntehsized in which direction?
Total energy expenditure requirement for translocation
tRNA
40. Bind 30S subunit preventing attachment of aminoacyl - tRNA
Double Strand DNA repair
Tetracyclines
Ehlers Danlos
Pyrimidines
41. Inhibits dihydrofolate reductase down thymine
Methotrexate
Elastin
Sodium K ATPase
Which is the most and least abundant type of RNA
42. Epithelial cells
Thymine has a
unambiguous
desmin
cytokeratin
43. 3 sodium out for 2 potassium in (nout - kin)takes 1 atp and the machine is phosphorylated during the machine cycle
Sodium K ATPase
unambiguous
Euchromatin
tRNA
44. HS1 - HSB - H2 - H4
Which end of a growing DNA strand is the target
Prokaryote RNA pol
histone octamer names
step two of RNA processing
45. Specific endonucleases release the oligonucleotide containing damaged bases. DNA polymerase and logase fill and resealt eh gap
microtubule
Smooth ER
Nucleotide excision repair
mRNA is syntehsized in which direction?
46. MRNA
Fluoroquinolones
capped and tail transcript is called
Total energy expenditure requirement for translocation
Griseofulvin
47. Change resulting in misreading of all nucleotides downstream - usually resulting in a truncated non functional protien
microtubule
Which end of the nucleotide has the triphosphate
frame shift
White codon is at the 3 prime end of a tRNA
48. Antifungal - act on microtubules
Griseofulvin
transition
missense mutation
nucleotide
49. Specific glycosylases recognize and remove damaged bases - AP endonuclease cuts DNA at pyrimidne site - empty sugar is removed and the gap is filled and resealed
Osteogenesis Imperfecta
Associations of Ehlers Danlos
single stranded binding proteinds
Base excision repair
50. Cyclin depndent kinases; consituative and inactive
CDKs
Proofreading function in eukaryotic RNA
Thymine has a
tRNA