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2020-05-30 · Simple diffusion is a passive transport as thus, doesn’t require any energy. Facilitated diffusion is also a passive transport mechanism that doesn’t require any energy, but some facilitated diffusion processes can be active. Speed: The speed of simple diffusion is relatively low. The speed of facilitated diffusion is relatively higher. Short story: Active transport uses energy, passive transport doesn't. Long story: For almost all substances, there is a difference in concentration of substances inside and outside of the cell. This is called a concentration gradient.

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Start studying Diffusion, filtration, facilitated diffusion, osmosis, passive and active transport. Learn vocabulary, terms, and more with flashcards, games, and Diffusion (av latinets diffusio, av diffundere, "utbreda") är den spontana spridningsprocess som äger rum när något, oftast gaser eller vätskor, med en egenskap skilt från omgivningen sprids, blandas och jämnas ut. Ofta orsakas diffusion av något slags slumpvandring. Ett exempel på detta är när salt sprider sig jämnt i en lösning.

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This example of passive transport is the diffusion of water. answer choices . osmosis. concentration gradient.

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Active and Passive Transport Definition. Active and passive transport are the two main biological process which plays an important role in supplying nutrients, water, oxygen, and other essential molecules to cells and also by removing waste products.

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The key difference between active and passive diffusion is that the active diffusion or active transport uses energy to transport molecules against the concentration gradient while the passive diffusion does not need energy since it occurs along the concentration gradient. There are different types of transport systems that help moving substances from one place to another. In active transport, the molecules move against the concentration gradient whereas in passive transport, the molecules move along the concentration gradient. Uptake of glucose in the human intestine works on the principle of active transport.