Lab Report
Cell Membrane Transport
ZOOL 2011.19
A. Introduction:
Cells are the most significant building blocks of all living things. They are also the tiniest living organisms in the human body which provides structure for the body and intake nutrients that become energy. Cell membranes control what goes in and out the cell, it protects it. The lipid bilayer describes the membrane of both animal and plant cells where the properties that make up phospholipids are very important to the cell membrane function, it has protein which is dispersed properly and it mainly functions in the selective transport of molecules both in and out of the cell. Just like transport of many molecules and water are very vital processes for many living organisms. There is active and passive transport; active transport includes functions of a cell membrane to selectively push specific types of molecules across the membrane and there is passive transport in which it does not have need of an active role for the membrane. Osmosis and dialysis are also occasionally called passive transports because they too do not require an active role for the membrane. Osmosis is movement of water across a semipermeable membrane of low concentration to a solution of high concentration. On the other hand diffusion is movement of molecules from a high concentration to a low concentration. Osmosis is a form of diffusion but a distinction would be that it deals essentially with water. Tonicity is what makes the cells either shrink or grow depending on the environment it is placed at, it is an osmotic pressure and it is influenced by the different concentrations of solutes in and out of the cell. Filtration is what is used to remove solid particles and they can be removed by passing through a liquid and gas.
The information above is very important because it is exactly what everything in this lab will be about. It explains in detail what every single little definition and important
ZOOL 2011.19
A. Introduction:
Cells are the most significant building blocks of all living things. They are also the tiniest living organisms in the human body which provides structure for the body and intake nutrients that become energy. Cell membranes control what goes in and out the cell, it protects it. The lipid bilayer describes the membrane of both animal and plant cells where the properties that make up phospholipids are very important to the cell membrane function, it has protein which is dispersed properly and it mainly functions in the selective transport of molecules both in and out of the cell. Just like transport of many molecules and water are very vital processes for many living organisms. There is active and passive transport; active transport includes functions of a cell membrane to selectively push specific types of molecules across the membrane and there is passive transport in which it does not have need of an active role for the membrane. Osmosis and dialysis are also occasionally called passive transports because they too do not require an active role for the membrane. Osmosis is movement of water across a semipermeable membrane of low concentration to a solution of high concentration. On the other hand diffusion is movement of molecules from a high concentration to a low concentration. Osmosis is a form of diffusion but a distinction would be that it deals essentially with water. Tonicity is what makes the cells either shrink or grow depending on the environment it is placed at, it is an osmotic pressure and it is influenced by the different concentrations of solutes in and out of the cell. Filtration is what is used to remove solid particles and they can be removed by passing through a liquid and gas.
The information above is very important because it is exactly what everything in this lab will be about. It explains in detail what every single little definition and important