I think Bicycle is the most energy efficient transport.
active transport uses energy
active transport uses energy
Facilated transport does not need to use energy but active transport does.
yrt
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Active transport requires energy; passive transport does not.
active transport requires input of energy as it takes place aginst a gradient.
Walking or going on a bicycle, if it is reasonably close. Otherwise, a school bus or public transportation is more energy efficient, because a bus takes many people at once.
Active transport requires energy in the form of ATP.
simple and facilitated diffusion don't require energy and are forms of passive transport. Active transport requires energy
Energy efficient devices need not look much different to those that aren't. It really depends what device you are talking about, though.
Anywhere between 0% and 100%. Different energy transformations have different efficiencies.