Question

What results in the activation of RAS genes?

(a) GTP to GDP

(b) ATP to ADP

(c) GDP to GTP

(d) ADP to ATP

The question was posed to me by my college professor while I was bunking the class.

The origin of the question is Fermentation Biochemistry in section The Biochemistry of Fermentation of Fermentation Technology

Answer 1

Right choice is (c) GDP to GTP

Explanation: The conversion of GDP to GTP results in the activation of RAS genes. It is an external nutritional system. It can be concluded that RAS genes have an intrinsic GTPase activity and are active in a GTP-bound form and not in GDP-bound form.