To discuss:
The similarities and differences between facilitated diffusion and active transport.
Introduction:
Cellular membrane, nucleus, and cytoplasm are the three major components of a cell. Cellular membrane, which surrounds the entire cell, is composed of phospholipids and proteins. Peripheral proteins are generally found on the membrane surface and are temporarily attached to one face of the plasma membrane. Membrane proteins that traverse the entire cell membrane alone can serve as a membrane channel. A membrane channel aids in the transfer of solutes from one side of the cell membrane, which is selectively permeable, to the other side of the membrane. Such integral proteins are called as transmembrane proteins. Carriers are transmembrane proteins present in the plasma membrane, which facilitates the transfer of substances, including electrolytes and glucose.
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ANATOMY AND PHYSIOLOGY THE UNITY OF FORM
- Simple diffusion is __________ active passive a form of active transport dependent on ATParrow_forwardDetermine if each statement applies to facilitated diffusion, active transport, or botharrow_forwardWhat is NOT true about diffusion: 1. A form of passive transport. 2. Uses adenosine triphosphate to transport substances across the plasma membrane. 3. Tendency of molecules to move from an area of higher concentration to an area or lower concentration. 4. Classified as either facilitated diffusion or simple diffusion.arrow_forward
- In your own words, describe one similarity and one difference between diffusion via channels (like aquaporins) and facilitated diffusion.arrow_forwardThe tendency of molecules (particles) to extend or spread out from a region of higher concentration to a region of lower concentration. active transport diffusion facilitated diffusion osmosisarrow_forwardTrue or False.arrow_forward
- One of the curves in this graph describes nonmediated diffusion, and the other describes facilitated transport. Which is which? Explain your choices.arrow_forwardPassive transport does not require the use of ATP. Identify two substances that move passively across the membrane.arrow_forwarda problem wherein a cell’s volume increases more rapidly than its surface areaarrow_forward
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