Question

Why does diffusion not require any

energy?
A. The higher temperatures of the membrane "jump
starts" diffusion.
B. Cells only use energy to move substances across the
membrane.
C. Molecules are moving from a lower to higher
concentration.
D. Random particle movement allows molecules to move
from an area.

Answer 1

Diffusion does not require any energy because it is a passive process driven by the random movement of particles. Molecules naturally move from an area of higher concentration to lower concentration to achieve equilibrium.

Step-by-step explanation:

Diffusion does not require any energy because it is a passive process that occurs due to the random movement of particles. Molecules naturally move from an area of higher concentration to an area of lower concentration in order to achieve equilibrium. This movement is driven by the principle of entropy, which encourages systems to naturally move towards a state of maximum disorder.

For example, when you open a bottle of perfume in one corner of a room, the perfume molecules diffuse throughout the entire space without any external energy being needed. The perfume molecules move randomly, colliding with one another and spreading out until the concentration of the perfume is equal throughout the room.

Similarly, in biological systems, diffusion plays a crucial role in processes like gas exchange in the lungs and the movement of nutrients and waste products across cell membranes. The random movement of particles allows substances to move across the cell membrane without the need for additional energy input.

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