Which statement regarding heterotrimeric g proteins in a resting state is true?
a. gtp is bound to the α subunit in a complex with both the β and γ subunits.
b. gdp is bound to the α subunit in a complex with both the β and γ subunits.
c. the proteins are in a complex with g protein-coupled receptors.
d. gdp is bound to the β subunit in a complex with both the α and γ subunits.

B) GDP is bound to the alpha subunit in a complex with both the beta and gamma subunits

Explanation:

Heterotrimeric G proteins consist of three (3) distinct subunits, alpha (α), beta (β) and gamma (γ). These proteins couple the activation of diverse types of plasma membrane receptor to a variety of intracellular processes. Basically, most types of neurotransmitter and peptide hormone receptor, as well as many cytokine and chemokine receptors, fall into a superfamily of structurally related molecules, termed G protein-coupled receptors.

the electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, x-rays, and gamma-rays.

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