Final Answer:
To validate results in Figure 2 of Experiment 2 involving siRNA treatment, include control experiments I (evaluating protein levels post-siRNA treatment), II (assessing siRNA specificity on unrelated proteins), and III (demonstrating non-specific siRNA has no impact). So, option I, II, and III are necessary.
Step-by-step explanation:
In Experiment 2 involving siRNA treatment, it's essential to include specific control experiments to validate the results shown in Figure 2. Option A is crucial as it involves evaluating the protein levels of FASN and mtKAS after siRNA treatment, directly assessing the intended impact of the siRNA.
Option B is also important for confirming the siRNA's specificity by assessing its effect on unrelated proteins, ensuring that the observed changes are specific to the targeted genes.
Additionally, Option C is necessary to demonstrate the specificity further; using a non-specific siRNA should not affect the protein levels of FASN and mtKAS. Therefore, all three control experiments (I, II, and III) are vital for comprehensive validation.