Diffusion

Abstract In this study, a CO2-respensive GM-AD-HA hydrogel derived from electrostatics crosslinks and supramolecular bond will be produced and studied about its mechanical properties and physiological performance. It is expected to have application in restoring cartilage and controllable delivery of Epirubicin Background of research Hydrogels have crosslinked microstructure and can swell up in water without resolving. Their soft and rubbery nature minimizes inflammatory reactions of the…

As stated originally, our hypothesis for the laboratory experiment was that there is an inverse relationship between the percent abundance of tap water in a mixture and the size (diameter) (cm) of the bubbles produced from the respective mixture. However, our experimental process yielded just the opposite results- a direct relationship between the percent abundance of tap water in a mixture and the size (diameter) (cm) of the bubbles produced from the respective mixture- meaning that when there…

Why the system is important? The purpose of osmoregulation is to maintain a constant, optimal osmotic pressure within the body or cell. (Biology online, 2009). It allows the body to maintain a suitable concentration of solutes and of water in body fluids. Water is needed in the body for the reasons mentioned above such as providing trasport of substances, acting as a solvent and for use in evaporative cooling mechanisms. This means as humans we must maintain an optimum level of water in the…

There are six principles of pressure. One will explain each of the six principles of pressure. Also, state why it is important that the fire and emergency services personnel understand these six principles. The first principle is stating that the water is trying to burst out, therefore, it pushes and applies pressure to all confining contacting walls within a system. Water will behave differently in open containers than in confined spaces of firefighting systems (Sturzenbecker, Adams, &…

Aquaporins are a family of membrane proteins that selectively conduct water molecules in and out of the cell, while at the same time preventing the passage of ions and other solutes. They can be found in animal, bacteria, and plant cells. So far 13 Aquaporins have been discovered (AQP0-AQP12) some of the Aquaporins only transport water molecules, such as AQP1, AQP2, AQP4, AQP5 and AQP8. Aquaporins that transport water and other solutes are called aquaglyceroporins, these can transport glycerol,…

Introduction:The objective throughout the semipermeable membrane experiment was to test the permeability of the caterpillar's intestine. Through this experiment one would be able to observe a transverse of small molecules through the cell membrane. Question: Were starch and Lugol’s molecules able to cross the membrane? Hypothesis: If there is a presence of glucose among the fluids in between the intestine and circulatory system then there is to be a breakdown of starch molecules within the…

According to Simon (2002) the silica gel is the most widely used absorbent and it is the stationary phase that is dominant in Thin layer chromatography, particles or molecules that are non-polar travel faster at the stationary phase and the molecules that are polar spend more time at the stationary phase and therefore this means that molecules that are non-polar travel larger distance on the TLC plate in comparison to molecules that are polar since the polar molecules stick to the polar…

The genetic combinations; two normal genes, one normal and one cystic fibrosis, and two cystic fibrosis, each affect the membrane proteins involved in transporting chloride ions through the cell membrane. Two normal genes would not alter whether or not the membrane proteins would correctly shield the chloride ions so that the ions could pass through the cell membrane. With this ability of the chloride ions successfully transporting across the cell membrane the body would not generate a…

can occur in two ways; passive transport and active transport. Passive transport allows substances to cross the membrane without any use of energy, and this includes simple diffusion, facilitated diffusion, filtration, and osmosis. Active transport however, requires the use of ATP, or energy, to move across the membrane. Diffusion is the movement of…

Turbidity: - Turbidity is a degree of water clarity. Turbidity is defined as an “expression of the optical property that causes light to be scattered and absorbed rather than transmitted in straight lines through the sample”. Nephelometers are used to measure the intensity of light scattered by contaminants present in water such as suspended and colloidal solids like clay, silt and microscopic organisms. Turbidimeters using the principle of nephelometer compare the light scattered due to…