Transport Through The Cell Membrane Chart Answer Key
The Cell Membrane
The cell membrane, also known as the plasma membrane, is a thin semi-permeable layer that surrounds the cell. It is made up of lipids and proteins, and its main function is to regulate the movement of substances in and out of the cell.
Transport Across the Cell Membrane
There are two main types of transport across the cell membrane: passive transport and active transport. Passive transport does not require energy while active transport requires energy.
Passive Transport
Passive transport includes diffusion, osmosis and facilitated diffusion. Diffusion is the movement of molecules from a high concentration to a low concentration until equilibrium is reached. Osmosis is the movement of water molecules from a high concentration to a low concentration through a semi-permeable membrane. Facilitated diffusion is the movement of molecules from a high concentration to a low concentration through a protein channel.
Active Transport
Active transport includes endocytosis and exocytosis. Endocytosis is the process of bringing substances into the cell by engulfing them in a vesicle. Exocytosis is the process of expelling substances out of the cell by fusing a vesicle with the cell membrane.
Transport Through the Cell Membrane Chart Answer Key
The transport through the cell membrane chart answer key shows the different types of transport across the cell membrane and the factors that affect them. It also includes the types of molecules that can cross the cell membrane and the methods of transport they use.
Factors Affecting Transport Across the Cell Membrane
The factors that affect transport across the cell membrane include concentration gradient, size of the molecule, polarity, and the presence of transport proteins.
Types of Molecules That Can Cross the Cell Membrane
The types of molecules that can cross the cell membrane include small non-polar molecules, small polar molecules, and large polar molecules. Small non-polar molecules can easily diffuse across the cell membrane while small polar molecules use protein channels. Large polar molecules require energy and the use of transport proteins.
Methods of Transport
The methods of transport include diffusion, osmosis, facilitated diffusion, endocytosis, and exocytosis. Diffusion and osmosis are types of passive transport while facilitated diffusion, endocytosis, and exocytosis are types of active transport.
Conclusion
The transport through the cell membrane chart answer key is an important tool for understanding the different types of transport across the cell membrane. By understanding the factors that affect transport and the methods of transport, we can better understand how substances move in and out of cells.