Rationale The cell membrane, also called the plasma membrane is found in all cells and separates the extracellular side of the cell from the cytosolic side (Cell membrane (plasma membrane), 2023). The purpose of the cell membrane is to communicate with the cell’s external environment, to contain the cell’s contents and to control the transport of molecules in and out of the cell. Diffusion is the passive movement of molecules from an area of high to low concentration.
In this lab, we soaked a gummy bear in water for twenty four hours to see the effects osmosis would have on it. When we got our gummy bear we would take its measurements and soak it in water. After twenty four hours we would take it out and record the measurements again and find the percent change. The question that we addressed in this lab was, what would happen if you soaked a gummy bear in water for twenty four hours? I hypothesized that after this time the gummy bear would increase in size.
The data observed and recorded in this lab shows that the concentration of miracle gro’ does affect the growth rate and germination speed of black eyed peas. The data is shown through two graphs and two data tables. The control group in this experiment is the seeds with a 0% concentration of miracle gro’, therefore the seeds with just water. The experimental groups are different concentrations of miracle gro’ including a 10%, 15%, 20%, 25%, and 30% concentration. The variable in this experiment is the amount/concentration of miracle gro’.
The subject chewed gum for a minute before they took the timed multiplication test and then took the test 2 times with the same gum then switched after 2 tests. Spearmint and bubblegum were very close in times. The one that did win though that was the fastest was spearmint gum. Some patterns that was shown is that the very first test is always slower than the other two gum, also that the bubble gum and spearmints averages both had more two minute averages than watermelon. The scientist thinks that spearmint gum was the best because of the mint flavor in the
On Januray 26, 2023, Jelly Bones was found dead in room W1106, a lab in Huntley Highschool’s science wing. The victim was a caucasian female who appeared to be roughly in her mid to late teens with straight, shoulder length blonde hair. When investigator’s arrive on scene it seemed evident that a homicide had occured in the school. The body was discovered by chemistry and foirensic science teacher Mrs. Zuniga, lying unresponsive in the lab. The victim was wearing light blue jeans with a pale gray colored t-shirt.
In this experiment, we observed the relationship between the number of domatia, the number of mites and the size of leaves of water oaks (Quercus nigra L.) and sweet gum (Liquidambar styraciflua). Domatia are small chambers often located on the lower surface of leaves that serve as homes for predaceous mites. In return, the mites protect the plant from herbivory and pathogen attack. This type of interaction between plants and mites is a form of mutualism, more specifically facultative mutualism. Mutualism is an interaction between individuals of different species in which both species benefit.
Materials and Methods The materials used in this laboratory was the diameter tape that we used to measure the tree’s width. We were designated the middle team and at our first point we used the quadrant method, and the quadrant method is when pick our first point that we started off with and extend both our arms facing north and south respectively to form two quadrants. The quadrants are then separated in half when we extend our arms east and west. Whichever tree that is closest to the point in each quadrant is then measured by the distance in which it is away from the point and also the width of the tree.
In the Gummy Bear experiment, two gummy bears of the same color were first massed and measured. Then, 150 milliliters of water was placed in a cup along with a gummy bear. Next,
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.
When we collected liquid from our distillation separation method, liquids #5 and #4 came out clear (without the food coloring). We believe solid #6 is what made our sludge purple. The density of food coloring is the same as water: 1 gram per square millimeter, our density was very close to this it was 0.51g/ cm3 and we could have made mistakes when reading the graduated cylinder.
The gummy bear in the vinegar solution shrank to 1 cm. The sugar water helped the gummy bear grow close to 2.5 cm and the gummy bear in the plain water didn't change in size.
This is completely relevant to the composition of sugar alcohols within gum, as separate options accommodate varying levels of sweetness. When compared to the approximate sweetness of sucrose, sorbitol retains around 60% of it, while xylitol possesses sweet flavor equivalent to that provided by general sugars (Calorie Control Council, n.d.). With this information in mind, the students will indubitably be able to develop logical conclusions about any
Next, weigh out 5 grams of sugar and 1 gram of yeast. Once in proportions, add it to test tube A. Thoroughly mix around the sugar, yeast, and tap water. You can do this by shaking the test tube gently. Make sure you do not turn it upside down. Then, cover the top of the test tube with a balloon and gently place it into a 400mL beaker filled up about half way (about 250mL) with water.
Osmosis Lab Report Research Question: How does the change in the concentration of a sucrose solution affect the process of osmosis in a potato cell by measuring its mass? Background information: 1 Osmosis is the process by which a liquid passes through a semi-permeable membrane, moving from an area with a high concentration of water to a low concentration of water. There are various factors that affect osmosis such as: concentration, surface area and temperature. The concentration of solutions can affect the rate of osmosis, as there is more difference in the concentration of the solutions, which means osmosis, will take place quicker. Surface area could affect osmosis based on the ease by which molecules can get through the semi-permeable
Does chewing gum really help improve concentration and short term memory? According to many scientific experiments and research that seems to be the case, chewing gum, did in fact improve concentration and short term memory in the test subjects, but why? It couldn 't be some simple coincidence that we could just chalk up to being one of those silly wives tales or just an act of nature that couldn 't be explained. So I decided to do my research and dive into the web, looking at many test and experiments to see what I could find on this topic. Apparently I was not the only one to think this and there had actually been an experiment to test why.
