Test
Beta Cells and Insulin
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Preguntas del test (19)
1Pre-Proinsulin contains an R.E.R signal that moves it to the golgi
- AVerdadero
- BFalso
2What is the role of the C-peptide part of the insulin chain
- AFormation of disulphide bonds between the alpha and beta chains
- BFormation of Fe-S bonds between the alpha and beta chains
- CFormation of peptide bonds between the alpha and beta chains
3Pro-insulin is made of the alpha & beta chains and the c peptide
- AVerdadero
- BFalso
4Which of the following cleave the c-peptide from the proinsulin?
- AEndopeptidase
- BEnteropeptidase
- CCarboxypeptidase
5What form does newly made insulin take?
- AGranules
- BCrystals
- CRods
6The cleaved C-peptide is released along with the insulin
- AVerdadero
- BFalso
7Why do Mannoheptulases inhibit insulin release?
- AThe insulin secretion system relies on the phosphorylation of glucose, which MHLs inhibit
- BMHLs block excretory channels
- CMHLs prevent the movement of insulin to the RER
8Optimum insulin secretion occurs at 8mM
- AVerdadero
- BFalso
9Why is optimal secretion of insulin at 8mM
- AGLUT 2 & glucokinase have Kms of 8
- BNot gonna put anything else
- CBecause reasons
10Insulin secretion relies on ATP dependent K+ channels
- AVerdadero
- BFalso
11K+ buildup causes Ca2+ influx and insulin secretion
- AVerdadero
- BFalso
12Which drugs block K+ channels and mimic high glucose?
- ASulpynoylurea
- BSulphinomides
- CSulphinomics
13Diazoxide causes insulin secretion by keeping channels open
- AVerdadero
- BFalso
14High doses of adrenaline stimulates insulin secretion through _ receptors
- AAlpha 1
- BAlpha 2
- CBeta 1
- DBeta 2
15Low concs of adrenaline inhibit insulin secretion through Beta receptors
- AVerdadero
- BFalso
16Insulin is catabolic
- AVerdadero
- BFalso
17Insulin stimulates _ activity in order to reduce cAMP levels
- APhosphodiesterases
- BAdenylate cyclase
18Which of the following metabolites are reduced?
- AFatty Acyl CoA
- BAcetyl CoA
- CMalonyl CoA
- DPalmitite
19Inc. Phosphorylation of tyrosine kinase by insulin causes what?
- AInc tyrosine kinase activity
- BInc phosphatase activity
- CInc Adenylate cyclase activity
Información
- Descripción
- (Insulin & Glucagon) Year 2 Test sobre Beta Cells and Insulin, creado por gina_evans0312 el 04/03/2014.
- Autor
- gina_evans0312
- Idioma
- English
- Visitas
- 419
- Etiquetas
- Valoración
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