However, for trials 1 and 2, the glucose concentration barely increased, possibly due to human error. (see table #2) In those first two trials, I mixed the bean solution with the water that rests on top of it, simply because I didn’t know that it would make a difference. After those two trials, I noticed that the results weren’t changing, and only then did I decide to dispose the bean water. Disposing the bean water made a dramatic difference, since the results increased drastically afterwards. (see table #2) The mixture with the bean water caused the solution to not be as concentrated, limiting the amount of oligosaccharides that the alpha galactosidase can break down, therefore resulting in a small amount of glucose concentration.
You need essential food to keep you alive and healthy, and junk food is not a necessity. In conclusion, food stamp users should be able to buy junk food. If the state takes it away for those, they should take it away for these who buy their groceries. Some people need junk food to live. Obesity is not going to decrease by taking away the opportunity and right to purchase junk food for the food stamp users, nor will it increase much if at all.
Title: Diffusion & Osmosis Purpose: The purpose of this experiment was to test the tonicity of the different solutions. Background: Diffusion and osmosis are both processes that occur within the plasma membrane. Diffusion is the process by which molecules intermingle as a result of kinetic energy. Osmosis is the movement of water across a semi-permeable membrane. Tonicity is also related to osmosis.
Amir Ahemedin Ms.Buckley Genetics 11/06/15 Transformation of E.coli Lab Purpose The purpose of this lab is to genetically engineer the E.coli strain by introducing two genes, the green fluorescent protein gene (GFP) and the ampicillin resistant gene (AMP). Then observe whether or not the E.Coli strain would take up these genes and become fluorescent. Background Information In this lab, bacterial transformation was one of the three processes that occurred when genetic material is introduced to a bacterial cell. Bacterial transformation is important because it allows for the cloning and movement of DNA between strains. This transformation usually occurs within plasmids, which are closed circular molecules made up of double stranded DNA.
A second way is when the chemical and electrical gradients go up against one another because they urge the potassium ions to move in opposite direction, this therefore creates an electrochemical gradient. Lastly, the electrochemical gradient is used to determine how many potassium ions actually interchange through the potassium channels. This is especially relevant because the potassium ions will continue to flow into and out of the cell until a level of equilibrium is established (Gate, n.d). Another key point is what potassium's biological function in human physiology. In broader perspectives, it
Factors Affecting the Rate of Osmosis I. Research Question: How does the amount of Monosodium glutamate or MSG (C5H8NO4Na) concentration affect the osmosislarity of cow (Bos taurus ) liver cells? II. Background information Osmosis is the diffusion of water molecules through a partially permeable membrane from a region of high water concentration to a region of low water concentration. The factors affecting the rate of osmosis are temperature, concentration gradient, molecular size, surface area to volume ratio, and permeability.
These proved that chocolate has no effect on facial breakouts. In essence, it is not chocolate, per se, that hurts your complexion but the sugars and fat that it often contains that actually do the damage. From this, scientists were led to discover vitamins and minerals that could probably help. The Islander Diet Did it ever cross your mind why those who live in the Pacific Islands do not suffer from acne even during their puberty? To answer this wonderment, try comparing the Western diet with the Pacific Islands diet – you are bound to find significant differences.
This lets us to notice what in the red blood cell was able to permeable across the cell membrane, since they were placed in different osmolality solutions we are able observe the tonicity of the cell’s behavior. When the Erythrocyte is placed into a hypotonic solution, the cell will swell because water will move gradually into the cell. The concentration of solutes are lower outside than the inside of the cell, so the water will move in the cell and cause the cell to swell. If the cell was placed to hypertonic solution, the solution has a higher solute concentration than the cell, so the water moves out the cell and causes the cell to shrink. When the red blood cell is placed into a isotonic solution, the concentration of the
In our body the blood glucose levels are regulated by a negative feedback system. The negative feedback system is a type of homeostatic system, and allows the body to maintain homeostasis. It detects changes, using the sensor, (which in glucose regulation is the pancreas recognizing the change in levels of glucose in the blood), caused by the stimulus. Then the control centre (pancreas) which is the response to the change, sends a message to the effector (liver) to counteract the change. The effector acts about to bring the body to its original set
There are also mechanisms put in place by our body to counter this loss of water in order to have at all times a level stable enough to avoid health problems due to a great loss of water. What we are going to try to see is how this affects human performance, will a sportsman in hypodration see these performances diminished or if they remain the same? We therefore decided to study the hypohydration and the consequence on physical performance, for that we will first work on the macroscopic aspect. We will analyze the effect of hypohydration on the use of glycol, on the temperature of the human body or on the perception of pain. We will use studies done by scientists to give us valid information to explain the results.
Meanwhile, on our LB/amp plus DNA petri dish we had a lawn of bacteria and the color was almost clear. Our results for this petri dish mean that the bacteria was not killed by the ampicillin. Next, in the LB/amp minus DNA petri dish we observed very minimal amounts of growth. These results mean that we correctly followed the procedures because this petri dish was not supposed to have growth due to the ampicillin. Our last petri dish was minus DNA and lysogeny broth, in this petri dish we saw 7 colonies of bacteria and there were a light yellow color.
Unknown #10 produced no identifiable macroscopic characteristics as a broth, so the first step was to Gram stain a loopful to determine the microscopic characteristics. Gram staining not only helped identify Unknown #10’s microscopic morphology but it also helped ensure the specimen was a pure culture—no other bacteria were visible when Unknown #10 was Gram stained and observed under the microscope. Unknown #10’s key microscopic morphology was that it was a very small, Gram negative bacillus. Though bacilli can possibly form endospores, no empty white centers were visible which suggested that Unknown #10 was not an endospore forming bacteria. No quick endospore stain was performed to validate this assumption since only one assigned organism was endospore forming and unlike Unknown #10, that organism was Gram positive.
Purpose and Techniques: This experiment has the aim to determine a chemical formula of hydrated compound, which ingrains cupper, chloride and water molecules in its structure. In order to find this hydrated compound, it is necessary to use the law of multiple proportions. In other word, finding the appropriate variables values to this compound (CxCly*zH2O). Additionally, two major steps are required to proceed the experiment. The first consists to heat a sample to liberate the water hydration, and then compare two mass weights before and after heating so gets easier to find the water percentage (mass).
Our hypothesis was that if the plate contains only the LB broth the E. coli bacteria would have no antibiotic resistance and would not glow. If the plate contains just LB broth and ampicillin then the E. coli bacteria will have antibiotic resistance only if the plasmid is present. If the plate contains LB broth, ampicillin and arabinose then the E. coli bacteria will glow fluorescent under a UV light and it will have antibiotic resistance. Similar to our expectations our results suggested that our hypothesis was correct. This is due to the fact that n order for the E coli.
Since the p value was greater than the alpha level, it indicated that the results were not statistically significant (Bridge etal 2015). We did not reject the null hypothesis and reject our hypothesis. Based on the tables and graphs that were constructed, we were able to see that the sodium chloride acted as a hypertonic solution for the yam cores compared to the water (McGraw-Hill Education 2003). Although we were able to visually see a difference between the two solutions, it was not significant enough to reject the null hypothesis. Since a yam is a plant of the genus Dioscorea, it contains cells that are partially permeable membranes.