Final answer:
Ras and G-gamma indeed require post-translational lipid modifications such as farnesylation for membrane anchoring, crucial for their activation and cellular signal transduction functions.afunctions.a)true
Step-by-step explanation:
It is true that Ras and G-gamma require post-translational lipid modifications for membrane anchoring. The enzyme farnesyltransferase catalyzes the addition of a farnesyl group to Ras proteins.
Which allows for their attachment to the inner surface of the plasma membrane. This farnesylation is crucial for Ras proteins' activation and function.
Similarly, G-gamma subunits of heterotrimeric G proteins undergo lipid modifications, like prenylation, that enable their membrane localization.
These modifications play a significant role in the membrane association and enable proper signal transduction by facilitating interactions with other membrane proteins and receptors.