297549
Beschreibung
Quiz von gina_evans0312, aktualisiert more than 1 year ago
|
Erstellt von gina_evans0312
vor etwa 11 Jahre
|
|
Frage 1
Frage
Which form of Glycogen Phosphorylase is relatively inactive?
Antworten
-
Phosphorylase A
-
Phosphorylase B
Frage 2
Frage
In phosphorylase B, where is the N terminus?
Antworten
-
Floating free in the cytoplasm
-
Attached to the protein body
-
Unattached from protein
Frage 3
Frage
Which of the forms of glyocgen phosphorylase is most effected by cellular AMP/ATP levels?
Antworten
-
Phosphorylase A
-
Phosphorylase B
Frage 4
Frage
Which of the following phosphorylates Glycogen Phosphorylase?
Antworten
-
Phosphorylase B Kinase
-
Phosphorylase A Kinase
-
Phosphorylase Kinase
Frage 5
Frage
What protein causes the dephosphorylation of phosphorylase?
Antworten
-
Protein phosphatase
-
Protein phosphorylase
-
Prokein Kinase P
Frage 6
Frage
What is needed for the reaction of Phosphorylase B --> A to reverse itself?
Antworten
-
Water (and a lack of inhibiting AMP)
-
Water (and a lack of inhibiting ATP)
-
Water (and a lack of inhibiting GMP)
Frage 7
Frage
What is different about Phosphorylase A to B?
Antworten
-
Ser14 has been phosphorylated
-
Tyr14 has been phosphorylated
-
Thr14 has been phosphorylated
Frage 8
Frage
What difference does phosphorylating Glycogen phosphorylase make?
Antworten
-
Makes the relaxed form much more likely
-
Makes the taut form much more likely
-
Deactivates it entirely
Frage 9
Frage
How does phosphorylase B Kinase connect Glycogen Phosphorylase levels to the level of stimulation?
Antworten
-
It is activated by Ca2+- when the muscle is stimulated, glucose is needed and so glycogen is broken down
-
It is deactivated by Ca2+- when the muscle is stimulated, glucose is not needed and so glycogen isn't broken down
Frage 10
Frage
What part of Phosphorylase B Kinase binds to Calcium?
Antworten
-
Calmodulin
-
Calsequestrin
-
Troponin C
Frage 11
Frage
Which parts of phosphorylase B kinase are regulatory?
Antworten
-
Alpha and beta
-
Alpha and gamma
-
Gamma and beta
Frage 12
Frage
Which part of phosphorylase B kinase is catalytic?
Antworten
-
Gamma
-
Delta
-
Beta
Frage 13
Frage
In phosphorylase B kinase's Ca2+ binding sites, what are the affinities?
Antworten
-
2 high 2 low
-
4 high
-
4 low
Frage 14
Frage
What protein causes the phosphorylation of Phosphorylase B Kinase?
Antworten
-
cAMP dependent Protein Kinase
-
Adenylate Cyclase
-
Glycogen Phosphorylase
Frage 15
Frage
What is another name of cAMP dependent protein kinase?
Antworten
-
Protein Kinase A
-
Protein Kinase B
-
Protein Kinase C
Frage 16
Frage
What is the role of inhibitor one?
Antworten
-
To bind to protein phosphatase, activating it
-
To bind to protein phosphatase, inhibiting it
-
To bind to protein kinase A, activating it
Frage 17
Frage
What is contained in the N terminus domain of Glycogen Phosphorylase?
Antworten
-
The catalytic site
-
The allosteric effector site
-
The regulatory subunit
Frage 18
Frage
How does glycogen get from it's binding domain to the catalytic site?
Antworten
-
A hydrophobic tunnel
-
A hydrophillic tunnel
-
A lipophobic tunnel
Frage 19
Frage
Why is glycogen phosphorylase's site in a deep groove?
Antworten
-
To prevent AMP from entering
-
To prevent ATP from entering
-
To prevent water from entering
Frage 20
Frage
What happens if water enters the active site?
Antworten
-
Nothing
-
The enzyme is deactivated
-
Hydrolysis occurs instead of phosphorolysis
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.