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Experiment Pulmonary Surfactant

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The reason this experiment was performed was to see what surfactant does and really is. As said by Mallinath Chakraborty, “Pulmonary surfactant is a complex mixture of specific lipids, proteins and carbohydrates, which is produced in the lungs by type II alveolar epithelial cells. The mixture is surface active and acts to decrease surface tension at the air–liquid interface of the alveoli.” Within our respiratory system our lungs have alveoli which contain a surfactant that help with water. Without the surfactant in the alveoli the lungs will collapse with water, you would basically suffocate by the water in your body without the alveoli producing the surfactant. Therefore, we conducted an experiment with milk varying from whole milk and …show more content…

Scientific American says that “In a liquid, the molecules (small individual particles that can have positive and negative charges on their surfaces) can, just like magnets, attract and repel one another. In the case of a water molecule surrounded on all sides by other water molecules there is roughly the same amount of pulling and pushing force”. With the whole milk at 1 minute with just food coloring the circumference was 1 centimeter, at 2 minute it was at 2.5 centimeters wide and at 3 minutes the width was 3.5 centimeters. The half and half milk at 1 minute the width was at .7, at 2 minute the width was 1cm. 3 minutes the width was at 1.4. This shows the expansion of the food coloring and how rapid it is compared to the half and half. This means my hypothesis was incorrect and the fact that the soap made the color burst throughout the milk. My thought was the milk was to thick which would make the color or the dye just stay underneath the surface. This experiment is a great one to do just to see the way a natural created surfactant is produced and functions experiment in class to show the result of surfactant, and to get a better understanding of what it does within your respiratory system. This is a representation of the bodies alveoli, and how it works involuntarily without us even knowing. With a body that is primarily composed of water and to have such a simple function with our lungs

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The purpose of this lab was to see the hydrogen bonding properties by doing multiple experiments that had exemplified such things. In the drops of water on a penny, I had gotten two pipettes and counted how many drops of that liquid, either being soap water or regular water, could fit into a penny. The second lab called “Water down a string” there was two beakers and string, which was dampened with water. Holding the string at a 45 degree angle, I had to pour water from one beaker at the top of the string and have the water be transported by the string to the other. The third lab was “How curved is your meniscus” where we had to compare the curve of water, meniscus, in a glass graduated cylinder to a plastic cylinder.

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802 Words | 4 Pages

Materials: The materials that I will be utilizing during these experimentations are three to four ice cubes, one cup for measuring, six unblemished cups, one stopwatch, one hot water source, three tablets of Alka-Seltzer, one thermometer that measures from negative

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1444 Words | 6 Pages

A milk-based, litmus broth tube is incubated and observed after 48 hours. Observations include lactose fermentation without gas as well as with gas, the reduction of litmus, casein protein coagulation and casein and protein hydrolysis. These characteristics were all determined based on the color of the solution and the production of a curd, the curds density and the production of a gas. To determine the density of the curd, the tube was slightly turned to see rather or not it was mobile or concentrated towards the bottom. 2.3 Carbohydrate Fermentation of Lactose, Sucrose and

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258 Words | 2 Pages

It took much less time to extract the cream from the raw milk so that the cream

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2237 Words | 9 Pages

Without question whole cow’s milk is high in saturated fat and cholesterol, both of which should be avoided. In addition, there has been growing concern that three health issues associated with milk consumption have gone ignored and demand immediate attention: lactose intolerance, type-1 diabetes mellitus, and prostate cancer. A study in 2002 examined “the links between milk consumption and both type 1 diabetes mellitus, and lactose intolerance. These 2 topics...have received major and extended coverage in the media and have raised broad concerns about the safety of milk for children” (Goldberg, Folta, Must). In this study were revealed results of a Finnish study of cow’s milk consumption where the authors stated “...these data support the hypothesis that there may be a subset of at-risk children for whom cow's milk consumption promotes the development of type 1 diabetes” (828).

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812 Words | 4 Pages

Be cautious when performing this experiment as water may spill on the floor, slip and injure yourself badly. Check the floor surface area for any puddles of water and wipe down with as many dry paper towels needed. Take care when handling with equipment that is made out of plastic or glass because when dropped, the glass or plastic may shatter into pieces which can be very dangerous. If needed, ask a responsible adult to help out in the experiment to avoid injuries.

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304 Words | 2 Pages

During the experiment, observations were made of their color, mass, height, and width. This data shows percent mass change of the gummy bear and how the gummy bear was affected by the salt water. It also displays how the height and the width of the gummy bear changed because of the salt water, which made the gummy bear more compact. The more salt that was added to the distilled water, the more compact it was, however, if there was not a lot of salt in the mixture, it became large and fragile. The mass of the gummy bear was increased as a result of less salt being added with the distilled water.

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398 Words | 2 Pages

Well” it states chocolate milk has vitamin D and phosphorus. This shows chocolate milk is healthy and kids should have chocolate

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1079 Words | 5 Pages

As mentioned in the hypothesis, the prediction is that as the temperature increases towards the optimal, the rate of respiration will increase. As the temperature exceeds the optimal, the rate of respiration will decrease. The temperature of the environment can be varied by placing the respiration chamber under a temperature-controlled water bath/cooling bath. The temperatures that will be used in this experiment will range from 0ºC to 50ºC in 10ºC increments. Digital thermometer will be used to measure the temperature of air.

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439 Words | 2 Pages

The leading question in the experiment was how can we manipulate the materials in milk to make the stickiest glue? By altering some of the ingredients and adding others, glue can be made. Depending on what ingredients and the amount being added, the more sticky or less sticky it will be. Based on our background information including all the Ingredients and what they do and how they affect the milk, the hypothesis that made the most sense in this experiment was, if we add more baking soda to the curdled milk, the glue will be stronger. The measurements recorded were set back from a complication.

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413 Words | 2 Pages

Also, the participants who consumed the milk ate less at their next meal. Making

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981 Words | 4 Pages

Persuasive Writing- Dairy, Dairy Quite Contrary Picture the idyllic scene, you know the one I mean: grinning cows grazing on a grassy expanse of land, prancing about and mooing to their heart 's content. What about the scene in which a mother sets down two cold, healthy glasses of milk for her children to drink and they proceed to consume the delicious refreshment in mere seconds, leaving nothing but an adorable, frothy moustache above their top lip. Unbeknownst to this mother, and the 93% of Great Britain who drink cow’s milk, she has just handed her children a glass teeming with hormones, steroids, pesticides, and antibiotics. The dairy industry has spent copious amounts of money over many decades supporting the idea that milk is essential

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1539 Words | 7 Pages

The thinner the container the slower the reaction as there are less particles which the substances can collide with. Use the same sized container for every experiment

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1300 Words | 6 Pages

Abstract — This experiment was conducted to familiarize the students with the procedures regarding distillation—to be more precise, the separation of ethanol from an alcoholic beverage—using a distillation set-up consisting of boiling chips, a Bunsen burner, a condenser, a thermometer and several other materials. In the end, it was discovered that one may actually separate a homogeneous mixture, given that the components of said mixture differ in volatility and that they utilize a complete distillation set-up and follow laboratory safety rules and regulations. Keywords — Matter, homogeneous and hetereogeneous mixtures, distillation, volatility, boiling point I. INTRODUCTION There are typically two categories of matter, these are pure substances

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1099 Words | 5 Pages

Ventilation of a person through various activities Camila Gonzalez. This lab was made with the aim of proof that making different activities can alternate the ventilation rate, also is to see the variation of work our respiration system makes. We can see the different things and situations that can affect the normal process of ventilation and respiration, like the weather and the clothes that were limitations for doing this experiment because first the weather was so hot, so the person get tired early and began to ventilate faster and second the clothes wasn't appropriate for making the activities, because they also make weight and makes that the person get more tired. We use more than one person to make a comparison of the ventilation

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