440326
Descrição
Quiz por gina_evans0312, atualizado more than 1 year ago
|
Criado por gina_evans0312
mais de 10 anos atrás
|
|
Questão 1
Questão
5% of the human genome is genes that add a phosphate to something using ATP (Kinases)
Responda
- True
- False
Questão 2
Questão
Which of the following residues can be phosphorylated by kinases?
Responda
-
Serine
-
Threonine
-
Tyrosine
-
Valine
-
Argenine
-
Glutamic Acid
Questão 3
Questão
How many different kinases are there (roughly)?
Responda
-
510
-
520
-
530
Questão 4
Questão
In kinases, DFG & RC motifs are highly conserved
Responda
- True
- False
Questão 5
Questão
Which domains are commonly found in kinase interacting proteins?
Responda
-
SH1
-
SH2
-
SH3
Questão 6
Questão
SH3 proteins mediate the assembly of proteins structures by binding to proline rich peptides in them
Responda
- True
- False
Questão 7
Questão
SH domains modulate protein interactions by recognizing and binding to specific proteins by identifying specific peptide sequences
Responda
- True
- False
Questão 8
Questão
What is the role of PH domains?
Responda
-
Binding the protein to the ER membrane
-
Binding the protein to the cell membrane
-
Binding the protein to nuclear membrane
Questão 9
Questão
Membranes form what?
Responda
-
Compartments & permeability barriers
-
Compartments & osmotic barriers
Questão 10
Questão
What mediate membrane functions?
Responda
-
Proteins
-
Glycolipids
-
Phospholipid concentration
Questão 11
Questão
Mitochondiral membranes contail the most proteins, plasma membranes contain the least (Out of Mitochondrial, Plasma and Myelin membranes)
Responda
- True
- False
Questão 12
Questão
Most integral membrane proteins span the membrane
Responda
- True
- False
Questão 13
Questão
Integral proteins interact extensively with what?
Responda
-
The hydrocarbon chains of lipids
-
The phosphate groups of phospholipids
-
The hydrocarbon tails of phospholipids
Questão 14
Questão
Peripheral proteins are bound to the membrane via the head groups of phospholipids
Responda
- True
- False
Questão 15
Questão
How do we tell how strongly a membrane protein is associated?
Responda
-
Try and disassociate it using detergent
-
Try and disassociate it using water
Questão 16
Questão
Baterial Rhodopsin uses heat to pump protons out of the membrane
Responda
- True
- False
Questão 17
Questão
How is the hydrophobic core formed in baterorhodopsin?
Responda
-
7 alpha helices
-
7 beta sheets
-
3 alpha helices, 4 beta sheets
Questão 18
Questão
In the case of the highly conserved 'Membrane Spanning Alpha Helix Structure', what must be on the outside?
Responda
-
Phospholipids
-
Non-polar aa
-
Polar aa
Questão 19
Questão
The membrane spanning alpha helix structure acts as what?
Responda
-
A scaffold for the active site
-
The active site
-
The channel for the active site to move through
Questão 20
Questão
Transmembrane helices can be predicted by a long string (or more) of hydrophobic amino acids in their aa sequence
Responda
- True
- False
Questão 21
Questão
What is used to estimate the free energy change of a residue on transfer of a residue to water (i.e. how much energy does it take to disassociate the aa from the protein)?
Responda
-
A polarity scale
-
An amino scale
-
A pH scale
Questão 22
Questão
An amino acid with high energy lies buried in a hydrophobic region i.e. the membrane
Responda
- True
- False
Questão 23
Questão
How large is the hydrocarbon core of the membrane?
Responda
-
30A
-
32A
-
34A
Questão 24
Questão
What is the name of the 20aa section of an integral protein that spans the membrane?
Responda
-
Pocket
-
Window
-
Scaffold
Questão 25
Questão
How is a Hydropathy plot formed?
Responda
-
The free energy change for each 20 aa segement plotted against the first aa in each segment
-
The free energy change for each 20 aa segement plotted against the last aa in each segment
-
The free energy change for each 30 aa segement plotted against the first aa in each segment
Questão 26
Questão
What is the point of a hydropathy plot?
Responda
-
To find which aa are in hydrophobic areas
-
To find the window of integral proteins
-
To find the window of peripheral proteins
Questão 27
Questão
The criterion level for a hydropathy plot is +68
Responda
- True
- False
Questão 28
Questão
What is Porin an example of?
Responda
-
Membrane spanning alpha helices
-
Membrane spanning beta sheets
-
Membrane spanning helix/beta sheet structure
Questão 29
Questão
What tends to be the features of membrane spanning beta sheet residues?
Responda
-
Hydrophobic
-
Hydrophillic
-
Alternating hydrophobic and hydrophilic
Questão 30
Questão
The polarity of the internal aa in a membrane spanning beta sheet depends on the size
Responda
- True
- False
Questão 31
Questão
Each sheet in the m.s beta sheet arrangement is hydrogen bonded to its neighbor in a parallel manner
Responda
- True
- False
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.