What does a messenger molecule bind with to cause some effect on the target cell?

If the membrane potential is – 92mV in a neuron, this is: 

The diffusion of what creates the energy for ATP production in Electron Transport Chain?

Using the study you designed above, give an example of something you would need to do to maintain experimental control in your study.  

The popliteus muscle’s primary action is to:

Which structure deepens the acetabulum for stability?

Can the researchers conclude that “the hurricane directly caused higher stress in residents?”

Which hip muscle group contracts eccentrically to control trunk flexion during standing-to-sitting?

The gluteus maximus originates on the posterior ilium, sacrum, and coccyx. Where does it insert?

In terms of diversification, both the DIA ETF and the SPY ETF are sufficiently diversified.  Is this True or False? Please explain why.