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.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.