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Which type of cellular transport moves molecules across the membrane by expending energy?

Question

Which type of cellular transport moves molecules across the membrane by expending energy?

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Solution

The type of cellular transport that moves molecules across the membrane by expending energy is called Active Transport.

Here are the steps of how it works:

  1. Active transport usually happens across the cell membrane. There are thousands of proteins embedded in the cell's lipid bilayer. These proteins do much of the work in active transport.

  2. The process begins when the molecules that need to be transported bind to the protein.

  3. The cell then uses energy, usually in the form of ATP (adenosine triphosphate), to change the shape of the protein.

  4. This shape change allows the molecules to be released on the other side of the membrane.

  5. Once the molecules are released, the protein returns to its original shape, ready to transport more molecules.

  6. This process allows the cell to move substances against their concentration gradient, which is why it requires energy.

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Similar Questions

Active transport processes in the cell require which of the following energy molecules?Group of answer choicesRERmembraneATPGolgi

Which process involves the movement of small molecules against their concentration gradient and requires an expenditure of cellular energy?

Which type of transport requires energy input from the cell? A. active transport, B. facilitated diffusion, C. osmosis, D. simple diffusion.

Unlike passive transport mechanisms, active transport requires the input of cellular .

Movement of substances across the cell membrane occurs throughDiffusionOsmosisBulk transport All of the above

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