Question

10 points

The diffusion of water molecules in and out of cells is very common.
Which of the following is the process by which water moves across a
membrane, from an area of high concentration to low concentration,
without the use of energy? *
osmosis
hydrolysis
photosynthesis
cyclosis

Answer 1

Osmosis is the process; it is essentially diffusion, which is a spontaneous (no energy input required) process as applied to water.

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Hydrolysis is incorrect; that describes a type of chemical reaction in which water breaks a chemical bond.

Photosynthesis is incorrect; that describes the complex process in which energy in light is converted into chemical energy.

Cyclosis is incorrect; that describes the movement of cytoplasm within a cell. There is no spontaneous, net movement of water across a concentration gradient.