1. Which of the following is true regarding heterotrimeric G proteins in an active or on state? The β subunit is bound t

[answerhappygod]

1. Which of the following is true regarding heterotrimeric
G proteins in an active or on state?
The β subunit is bound to GTP in complex with both the α and
γ
GDP is bound to the α subunit in complex with both the β and
γ
GTP is bound to the α subunit, which separates from the β and
γ
The β subunit is bound to GDP in complex with both the α and
γ
2. When blood sugar is ____, insulin is released from ____
cells in the pancreas. Insulin binds a ___ receptor. After
activation of the receptor, ___ phosphorylates and activates
phosphorylase kinase, which leads to the _____of glycogen.
Low; beta; G protein coupled; PKB; breakdown
High; beta; RTK; PKB; synthesis
Low; alpha; G protein coupled; PKA; breakdown
Low; alpha; RTK; PKB; breakdown
High; beta; G protein coupled; PKA; breakdown
High; alpha; RTK; PKA; synthesis
3. Peptide hormones and growth factors act on target cells
by binding to _______ receptors.
cell surface
nuclear
cytosolic
cell surface or cytosolic
cell surface or cytosolic or nuclear