Cell Membrane Transport | Plasma Membrane Transport | Cell Biology🩸
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- Опубликовано: 17 мар 2021
- #CellMembrane #CellMembraneTransport #CellBiology
Cell Membrane Transport | Plasma Membrane Transport | Cell Biology🩸
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▬▬▬▬▬▬▬▬▬▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
MEMBRANE TRANSPORT
One of the primary functions of the membrane is to separate the intracellular environment from its extracellular environment. This separation is crucial for the maintenance of the proper conditions for cell function. In order to perform this important function, the membrane must regulate what enters and leaves the cell. For example, the proper nutrients must be allowed to enter, and wastes must be allowed to leave the cell. Additionally, some things must not be permitted entrance to or exit from the cell. In this section we will discuss the ways that various substances are moved across the plasma membrane.
Passive vs Active Processes
Processes that move substances across membranes can be grouped into two general categories based on whether the process requires an input of cellular energy or not. If no energy input is required for the transport, then we say particles move via a passive transport process. On the other hand, if the process requires cellular energy, usually in the form of ATP, then it is an active transport process.
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