INTRODUCTION Diffusion takes place on molecules of liquid, gas or a solution. It is the movement of molecules from an area of higher concentration to an area of lower concentration down a concentration gradient in random motion (D G McKean, Dave Hayward 2014). The diffusion of molecules passing across a lipid bilayer is also affected by its “hydrophobicity”. Diffusion can be done without the use of energy due to the randomness of the movements of particles. Molecules move from areas where they are dominant, to areas where they are in little number without the influence of outside forces.
In addition, the lack of secretion of hydrochloric acid provides a suitable environment for a reproduction of gut bacteria. These bacteria feed on vitamin B12, so it reduces the amount of vitamin B12. In the second stage of the normal body, vitamin B12 moves to the duodenum and combines with IF after releasing from proteins. Then it enters the small intestine up to the ileum (the last part of the small intestine) to break the IF, and absorb vitamin B12. However, in the second stage of pernicious anemia, the immune system becomes overactive.
If the carbohydrate is broken down too fast it is not healthy. If it is pushed too fast by the insulin it can have a negative influence. The rate at which the carbohydrates are digested and absorbed can influence body composition and health. A slower carbohydrate breakdown from lower glycemic carbohydrates is better for saturation, blood sugar and body composition. These carbohydrates are found in vegetables, fruits, legumes and whole grains.
Experiment C: Molecular weight and rate of diffusion This experiment was aimed to understand the relation between the molecular weight of a compound and its diffusing ability. The rate of diffusion can be determined using the molecular weight of the compound (Meyertholen 2015). So, the rate of diffusion is inversely proportional to the molecular weight of the particle. That is, a smaller weight particle will diffuse faster than a larger one. Hence, the hypothesis of this experiment was potassium permanganate would diffuse more than the methylene blue because of its less molecular weight.
The rough surface created by atherosclerotic plague increases the probability of a thrombosis because the platelets are designed to aggregate or attach to the rough surfaces. This reduces the nitric oxide bioavailability and thus resulting in the endothelial
However, the isotonic beaker with no NaCl solution did not cause the plant to remain at the same weight, but instead allowed it to take in a bit more water than the hypotonic solution. 5. State your conclusions about the influence of solute concentration on the direction of osmosis. In conclusion, osmosis is highly sensitive to various solutions. Thus, any amount of solute within the water will affect the flow of osmosis and the mass of any plant.
However, the density of the bacterial populations is influenced by the oxygen and nutrient provided by the host that can result in slower growth rates if oxygen and nutrient levels are not maintained. Low osmolarity increases luminescence and decreases the growth of bioluminescent bacteria due to a lack of oxygen. The opposite is also true, high osmolarity decreases luminescence while increasing growth
Furthermore, they are biodegradable by an enzymatic or hydrolytic mechanism and so allow host cells, over time, to eventually secrete their own extracellular matrix and replace the degraded scaffold. However, the development of scaffolds from biological materials with predictable and reproducible structure presents a challenge as well as the biological scaffolds suffer from poor mechanical properties, which limits their
S/N can be enhanced by increasing the light intensity of incident linearly-polarised, increasing the efficiency of the detector, or averaging and collecting data points in long time. Sample preparation and measurement A buffer or detergent or other chemical should not be used unless it will not mask the signal of protein. In addition, compound that could be absorbed in the desired region (190 - 250 nm) should not be used. However, Protein solution should contain only chemicals (with its lowest concentrations) that maintain protein stability. Pure protein should be used if possible, hence any additional peptide or protein will interfere with the CD signal.
When the temperature becomes low, the cell membrane is less absorbent and does not permit more substance to pass through the membrane. My results supported my hypothesis which was as the temperature increases so does the beets permeability. In this experiment, there is a human error, as we cut the beet the measurement is near each other but not perfect. The amount of water in each tube would also be a reason for an error in this lab because it was not all equal. Another factor would be, temperature because some were long and some were short.