Describe how the proton-motive force is generated and its importance?

Which of the following is true or false

The diffusion of an uncharged solute in aqueous solution:

Always diffuses from high concentration to low concentration

Will diffuse at a rate proportional to the difference in concentration between regions 

Involved passive diffusion as well as active diffusion 

Requires energy in atp form 

Always diffuses from regions of low concentration to high concentration

which of the following are true or false 

Which of the following are characteristics of a typical teleost cardiovascular system?

The heart receives oxygenated blood flowing from the gills

Cardiac outputs are lower compared to those of mammals of similar size

The heart empties almost completely at the end of each systole

Blood pressure drops significantly as blood passes through the gills

Arterial pressures are lower compared to those of mammals 

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