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Which activity can occur without the use of
energy?
(1) contraction of muscle tissue
(2) protein synthesis in a cell
(3) active transport of minerals
(4) movement of water across a membrane



Answer :

Answer;

-Movement of water across a membrane

Explanation;

-Movement of water molecules across a membrane is an example of passive transport . Passive transport involves movement of ions and other atomic or molecular substances across cell membranes without need of energy input.

-Unlike active transport, passive transport does not require an input of cellular energy (ATP). Examples of types of passive transport are osmosis and diffusion.

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