The movement of matter across a cell membrane against a concentration difference is called (active transport / passive transport / facilitated diffusion / osmosis), and it requires (aquaporins / energy / homeostasis / osmotic pressure). 


Active transport is the movement of matter across a cell membrane against a concentration difference, this process requires energy.

The mode of transport that demands the consumption of metabolic energy is called activated transport, since the movement is carried out against a gradient of chemical potential.

Therefore, we can conclude that active transport requires energy to be carried out, since it is a type of movement that goes against the concentration gradient.

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active transport, energy

Explanation:

Moving against a concentration gradient requires energy, so it is known as active transport, as opposed to passive transport, which involves moving with a concentration gradient and doesn't require energy.