Hypothesis- If an egg is placed in water or sucrose, then the egg will become hypotonic compared to the water. Since there is a higher concentration of solute inside the egg than outside of it, the water will try to form an equilibrium with the egg and outside water. With the sucrose egg, water will move out of the egg because the sucrose has more solute than the egg, making the egg hypotonic to the sucrose. Background-This experiment involves the process of osmosis. Osmosis is the special movement of water, generally in a cell. In this experiment, the cell is represented by the egg in the center of the beaker. The concept of osmosis is water moving through a cell membrane without energy, and flowing with the concentration gradient. Osmosis
In Biology class we conducted a lab called “Bird Beaks”, in the lab we were separated into four groups of different bird beaks. Our goal was to see which type of beak was more successful, and if evolution occurred. I claim that Evolution did occur in the bird beak lab because spoons were able to survive and grow throughout everything that occurred and tweezys were able to grow and thrive after migration and everything that followed. My first piece of evidence and reasoning, is that spoons survived throughout the whole experiment after two natural selections, a migration of tweezys, a natural disaster, and a mutation. We started with seven spoons and ended with thirteen spoons.
Give data and explain why this happened in terms of osmosis and diffusion. The distilled water and vinegar had the most mass when it went in the egg. When the vinegar and distilled water is added to the solution they were both hypertonic. The water seeped in the membrane, it used diffusion to balance it out.
For Andrew’s first egg-drop he started off saying that it was important that he made a base for his egg drop. As seen in image, IMG_0312.JP, Andrew is in the process of creating his egg-drop base. The first thing Andrew did to make the base sturdy is taping down popsicle sticks creating an x across the bubble wrap. He told us, “I will make an x out of popsicle sticks because this will create more mass, so there will be more air resistance.” He then proceeds to make a barrier around the ends of the bubble wrap using cardboard tubes as seen in image, IMG_0325.JP.
The potatoes were placed into a hypertonic solution (sucrose) which caused the potatoes to lose mass and shrink as water left the potato. Osmosis took place by moving water from the potato in the sucrose solution to try and reach a balance with the potato and the solution. There was no control (H2O) used in this experiment as there should have been, so there is no data for that.
Genius When using gas in the egg drop challenge, it spreads the amount of energy transferred from the ground to the egg. Making the energy from the ground to the egg less, because if you look closely at a balloon filled with air. When it hits the ground, the gas in the balloon spreads out inside the balloon, and then contracts back. The solid object (the egg) on top of the balloon will sink into the balloon, because it’s a solid and heavier than the gas in the balloon. Let’s say you have an egg that weighs about one pound, you have to build a sculpture that slows down something moving at 9.8 meters per second.
For this lab I will be using water and sucrose to demonstrate the rate of osmosis. In this lab I will be exploring how temperature impacts the rate of osmosis by placing pieces of potato of equal size in solutions of different temperatures and observing the change in mass of potato after a given period of time. The change in mass will indicate the rate of osmosis.
PURPOSE OF EXPERIMENT The purpose of the lab was to observe the endocrine regulation of kidney osmosis and volume in regulation mildly dehydrated undergraduate students, with no consideration of their diets or lifestyles. Students were placed in one of four possible test groups which consisted of consuming water, coke, Gatorade, or nothing at all. The motive behind choosing these specific groups is because each drink had a different levels water and solutes (or none at all) and we wanted to observe if over a period of 2 hours there would be a difference in the total amount of volume of urine voided (every 30 minutes), the urine flow rate, the urine specific density, and the pH levels (Manguid,2018).The volume voided was measured in milliliters using a measuring cup.
The Gummy Bear experiment illustrates osmosis, a type of diffusion involving the movement of water molecules through a semi-permeable membrane. The gummy bear represents the semi-permeable membrane. The area inside of the gummy bear had a higher solute concentration than the area outside of the gummy bear, so the water was moving. In situations like this, water tries to move from an area of high water concentration (or low solute concentration) to an area of low water concentration (or high solute concentration). The water moves around until it achieves an equilibrium.
Practical Report- Diffusion in Agar Cubes Sabrina Turtur- Stage 1 Biology Introduction Diffusion is the movement of particles (atoms, ions or molecules) from an area in which they are in higher concentration to areas of lower concentration. It continues until the concentration of substances is the same throughout. The act of diffusion occurs in respiration, photosynthesis and osmosis. Without it, cells would not receive the nutrients they need to resume stability.
In hypertonic environments (where there are more solutes outside than inside the cell) cells will lose water. In hypotonic environments (where there are less solutes outside than inside the cell) the cell will gain water. When solute concentration is even both in and outside of the cell there is no water movement so the cell would be in an isotonic environment (Figure 1). Purpose The purpose of this experiment was to find the effect of sucrose solutions on osmosis.
The egg had been acting as the cell in this experiment. Placing the egg in vinegar made it easier to see the effects of osmosis because there was no impermeable shell to prevent liquids or molecules from passing through. As previously stated, water molecules will diffuse from higher concentrated areas of water to lower concentrated areas of water. In the tap water example, there had been a higher concentration of water molecules in the water, not the egg. This means that the water molecules will pass through the cell membrane to enter the egg and reach a state of equilibrium.
Final Analysis Paper The egg experiment was a creative way to helping us learn more about the development of children. I really enjoyed this project. I was able to learn a lot and be creative all at once. My child was a girl and I named her Victoria Blake.
Osmosis Egg Lab Report Introduction The experiment revolves around selective permeability of the membranes of de-shelled chicken eggs. The eggs have been soaked in vinegar for about 3-4 days to dissolve its shells, which results in a delicate shell membrane connecting the inner contents of the egg. The shell is selectively absorbent only to water. The solution that is the dissolved in the internal contents of the egg is approximately 18-20% which is the solute concentration.
Reverse osmosis makes desalination work. We defined osmosis as a naturally occurring process in which a liquid such as water spontaneously passes through a membrane. The membrane allows some molecules like water through, but other molecules like salt are unable to easily pass through the membrane structure. It moves from a more concentrated solution to a less concentrated solution. So, in osmosis fresh water (High concentration of water molecules) moves to salt water (Low concentration of water molecules), as a result we get higher amount of salt water.
The eggs should be laid in a flask filled with water and dissolved test substance, and the development stages of the eggs should be controlled. Any change in the egg development should be recorded. A distributed egg appears in orange color and it should be thrown away immediately. The test should be carried out in many concentrations. The Growth and the development of the eggs were controlled under stereomicroscope.