Therefore, the result might be different if there was more corn syrup. b) Dependent (Responding) - what is being measured? How much the mass of the egg (amount of water inside) increases or decreases after 24 hours of soaking in the liquids. The mass is depends on what happens after 24 hours with the distilled water/corn syrup.
The answer to our question in our introduction is that duckweed plants grow better in medium amounts of water. In this case, specifically 500 ml of water. Our hypothesis, however, was incorrect, for we believed the duckweed would grow better in the small amount of water. We had many errors in our experiment. For example, when we had the beakers on the window sill, the sun had evaporated some of the water.
The lab that I did was elodea leaf lab, where me and my partners have to gets a blank glass, take a little leaf out of the water, and put a drop of its water into the glass before putting the lid on. After carefully observed the leaf by using the x65 lens, we puts a drop of salt into the leaf and closed the lid to see how the chloroplasts changed under the microscope. We were basically analyzing the changing of the chloroplasts shape after we puts the salt solution into the elodea leaf. The purpose of our lab was to see how salt solution can affect the elodea leaf cell.
In this experiment, we are determining how the osmosis is effected when the salt solution is diffused on the elodea leaf cells and it organelles. The steps we took to solve this dilemma to determine the effect of the solution on the elodea leaf, was first to get two leafs from the elodea plant. Then we created the different salt solution in two tubes to later add in the slides.. As a class we seperated into our groups, we each place a leave on a slide to see it cells before contaminating it with the solution. After we examine the leaf, we added the 5% salt solution on the leaf slide and check the results.
of water varying slightly from person to person. We consume water from drinking it and also from the food we eat such as watermelons. We also get a tiny percentage of water given out through the process of respiration. Water is a universal solvent. Water in our body acts as a solvent for solutes such as amino acid, glucose, urea, lipids (non electrolytes) and electrolytes (which break up into ions) such as Na+, K+ to be dissolved in.
So to learn more about the levels of ph research was needed. Investigating ph levels and getting research was the first part to this project. First off what is ph, and what does it mean? PH of water is the potential hydrogen. Potential hydrogen means how much hydrogen is in the water.
It is intriguing to think an inanimate plant has evolved to the point that it can quickly react to the stimulation of touch. The most common explanation among environmentalists and ecologists is that is a quick alteration in the turgidity of the plant cells. That means there is a change in the pressure of water located inside of the cells. These cells are located in the lower part of the midrib. Although it is not as simple as stated, it is true that the lower midrib cells consume more water.
Additionally, it was difficult obtaining a piece of rhubarb that was thin and particularly red, therefore the effect could not be best observed in the cells. Part B: Design your own experiment Parts of this practical were taken and slightly altered from the following link http://www.markedbyteachers.com/gcse/science/investigate-the-effect-of-surface-area-on-osmosis-in-potato-tissue.html Aim: To observe the effect different surface area: volume ratios have on osmosis in potato tissue. Hypothesis: If the potato has a larger surface area: volume ratio, the quicker osmosis will take place and the larger the mass will be at the end of the experiment, therefore the difference in mass of the potatoes from the start of the experiment to the end of the experiment will be larger. Additionally, the potato pieces left in a saltwater solution will decrease in mass, whereas the pieces left in water will increase in mass.
Biology Design Practical Joshua Edwards What are effects of the volume of a potato and the amount of weight it loses when placed in salt solution? Introduction This design practical uses a potato’s surface area to volume ratio to see what affects it has on osmosis in different concentrations. Osmosis is the movement of water molecules through a cell membrane into an area of a higher solute concentration. The movement goes the way of the solvent with more solute because the lower solute concentration is drifting through balancing the ratio of solute per solvent (En.wikipedia.org, 2018).
Research Question: How does the presence of light impact the rate of transpiration in plants? Aim: The aim of this experiment was to investigate how the presence of light affects the rate of transpiration in plants. Hypothesis: As light intensity increases, the rate of transpiration (water uptake) in a plant increases.
Introduction Plants are a major necessity in the balance of nature, people’s lives, and our terrain. We may not realize it, but plants are the ultimate source of food for almost 95% of the world population so says the National Group of Food. It’s a fact that over 7,000 species of plants are being consumed today. Plants are one of the reasons that we get clean water; as they help regulate the water cycle.
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.
Two of the same types of plants were used, in order for the results to be reliable. One of the plants was labelled DISTILLED whereas the other was ACIDIC, so the results don’t get mixed. The DISTILLED plant was used as a controlled variable, where normal spring water was used (pH 7.3) The ACIDIC plant was the one the experiment had taken place on, this was where lemon water was used (pH 2.0) Throughout the experiment pictures were taken, so one will be able to notice the colour change on the acidic plants, as it had started to slowly die. With both plants you are able to notice that they had both started to grow flowers, but more the spring watered plant than that on the lemon juice watered one. The results of the plant growth was recorded to we would be able to notice the amount it had grown, this would be the water compared to lemon juice.