Answer:
Mutations in the active site induce a continue 'switch-on state' of the Ras proteins
Explanation:
Ras is a family of GDP/GTP-binding proteins expressed in all animal cells. Ras proteins play roles in signal transduction pathways, where they are activated to subsequently 'switched on' other proteins involved in diverse cellular processes including cell growth, cell differentiation and survival. In consequence, the Ras genes are considered to be oncogenes because when they are overexpressed in cells their encoded proteins produce uncontrolled cell proliferation, thereby leading to cancer progression.
The correct answer is B. B-C
When actions of potential reach the end of the axon, the neuron releases chemicals messenger which are also called neurotransmitter. The inner part of a nerve which is the due presence of potassium ions while the outer part it is positively charged because there is a presence of sodium ions. The period of time when potassium gated channels they are mere than the period time for sodium under a condition called hyperpolarization.
