Why does passive transport not require the cell to use energy to move molecules across the membrane? The molecules are moving against the concentration gradient.

The molecules use protein pumps to move molecules across the membrane.

The molecules use water to move across the plasma membrane.

The molecules are moving from high concentration to low concentration.

The molecules are moving from high to low concentration.

Explanation:

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

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