3 years ago

What are the similarities and differences between diffusion and active transport?

1 answer:

7 0

Both use ion channels to move ions across the cell membrane, in or out of the cell. Differences: Passive Transport (or Diffusion) moves ions from high concentration to low, using no metabolic energy. Active Transport moves ions from low concentration to high, using metabolic energy in the form of ATP.

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A soil profile with labels O, A, B, C. O: top layer. A: second layer. B: third layer. C: bottom layer. Examine the soil profile

Savatey [412]

Label O is organic material, label A is topsoil, label B is subsoil and label C is weathered rock. They represent different soil layers.

<h3>Soil layers</h3>

Soli layers, also called horizons, refer to the different layers observed on the ground.

The topsoil is a layer of soil composed of a mixture of sand, silt, clay and organic material referred to as humus.

Weathering rocks refer to the dissolved rocks and/or minerals on the Earth's surface.

Subsoil refers to the layer under the topsoil on the surface of the ground.

Learn more about soil layers here:

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3 years ago

The basic structural unit of the body is the

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Cells.........they are the basic structural and functional unit of life