Summary of Transporte Celular

00:00:00 - 00:05:00

This video looks at the role of transport proteins in cellular transport, with a focus on the sodium bomb. It explains that this active transport is important for cells to energy to transport materials around. Cells are still in transport active at this moment, but let's say for example a cell needs a molecule very large, for example a large polysaccharide, to think about our video on biomolecules that is one large carbohydrate. It is possible that the cell membrane will fuse with the molecules it is absorbing to transport it inside. This is called endocytosis and often this fusion of substances with the cell membrane will form vesicles that cells can take inside of themselves. This is referred to as endocytosis, a general term, but there are different types depending on how the cell carries substances into the interior.

• 00:00:00 Cellular transport is vital for maintaining a stable environment within cells. One important structure for this is the cell membrane, which controls what enters and exits cells. Cellular transport is typically passive, moving molecules with a concentration gradient from high to low. This type of transport requires no energy, making it a passive transport mode. One example of transport facilitated by a protein is glucose uptake through the glucose transporter. This video looks at some of the other types of cellular transport.
• 00:05:00 In this video, we discuss transport proteins, one of which is the sodium bomb. We explain that this active transport is important for cells to energy to transport materials around. Cells are still in transport active at this moment, but let's say for example a cell needs a molecule very large, for example a large polysaccharide, to think about our video on biomolecules that is one large carbohydrate. It is possible that the cell membrane will fuse with the molecules it is absorbing to transport it inside. This is called endocytosis and often this fusion of substances with the cell membrane will form vesicles that cells can take inside of themselves. This is referred to as endocytosis, a general term, but there are different types depending on how the cell carries substances into the interior. Amoebas, for example, depend on a form of endocytosis, while other types of cells, such as pseudopods, extend around what they want to eat and then drag themselves towards a vacuole. There are also other forms, such as elegant endocytosis mediated by receptor cells where cells can be very demanding with what enters because the incoming substances must join receptors to even enter. Or pinocytosis, which allows