It is expected that the the length of the radical would decrease as the salt solution increases. Hypothesis: I think that when the NaCl solution concentration increases the length of the radical would decrease. The fact is that as the salt solution concentration increases it weakens the plant ability to absorb water/ nutrients in order to grow. Variables: Independent: Salt concentration (0.0%, 0.2%, 0.4%, 0.6% and 0.8%) Dependent: Length of radical (cm) Controlled variables: Controlled? Amount of seeds (mung beans) per petri dish (8 beans) How?
4. Also it helps the students to understand how yeast works and reacts to different chemicals. * Is important to shake the yeast suspension just before you add some to the test tube because all the yeast is in the bottom and you need to get it to the top to get them to the tube. * My graph shows that the amount of food and the activity of yeast were different because we put different amount of yeast. * The test tube should be set up in exactly the same way except for the differences amount of molasses because if not they would be a different result in the lab.
Some of the knows health risks from GM are that in stores they do not have nutrition facts/ingredients for GM chemicals in the foods therefore people who have allergies to nuts est. would not be able to eat Gm food because of the chemical traits, by this I mean when scientists put genes into some crops the mixture causes the crops natural genes to be unpredictable and scientists can not analyze for harmful affects within the crops. This leads to unknown toxins and this may cause allergic reactions.
Hypotonic means less salute and more water. For this lab, we can apply these principles to plant cells. The plant cells have a semi permeable membrane so they can experience osmosis and diffusion as discussed earlier. When it comes to the potato cells, added with NaCl (salt) it will experience a reaction changing the form of the cells. The hypothesis of this experiment goes as follows, If we place potato cells in a salt solution, then the cells will shrink.
This experiment will look at how soda, juice, and water will affect the growth of plants. Diet sodas do not kill plants like regular sodas do. To keep data on how tall the plants grow each day I have been putting the heights of each plant in centimeters on a chart. I check the heights each day and water the plants with their given amount of liquids in the procedures. The liquids I am using are diet sierra mist, tap water and orange juice.
Society is obsessed with productivity becoming cheap, which has made more problems regarding pesticides. Humans are not respecting the design of nature and valuing the relationship, the animals and plants have with each other. The animals eat the plants that have no use and the animals fertilize the plants. Over 10 million herbicides have been poured on the land of the farmers that has caused them to loose about 90% diversity and their soil is depleting quicker. What they’re farming are not animals, but are farming grass.
Compare and contrast the ways that cows and rabbits extract energy from diets consisting largely of cellulose; relate this to the structure of each animal’s digestive tract. (Hint: first you must explain why cellulose is a problem.) In comparison, both cows and rabbits are herbivores and eat mainly plants. Plant sell walls are made of cellulose, which are composed of glucose monomers that aren't useful unless broken down into glucose (sugars) to be used for energy. But herbivores need something to break down glucose.
Minerals come from soil and cannot be made by our bodies. Minerals work in balance with metabolism of proteins, carbohydrates, vitamins and fats. If there is a mineral that is of abundance it takes from others and it can cause deficiencies. Food sources with minerals are almonds, beans, figs, carrots, raisins, pecans, brown rice, apricots, dates, garlic, spinach, brazil nuts, cashews, papayas, avocados, celery, clams, cheese, corn oil, brewer’s yeast, whole grains, soy beans, bone meal, legumes, seafood’s, raisins, black strap molasses,
(Damon, )Since the movements of substances in passive transport take place from an area of high concentration to an area of lower concentration until both areas reach equilibrium, the water molecules will move from the potato strips to the sugar solution when there is less water concentration in the solution. Therefore, this means that as the sugar solution concentration increases, there will be more sugar molecules in the solution and less water molecules, therefore lowering the water concentration in the solution, causing the water molecules from the potato strips to move from the higher concentration area to the sugar solution with lower concentration. Vise versa, when there is lower concentration of sugar solution, there will be an increase of water concentration in the solution, therefore water molecules will move from the solution to the potato strips where there will be a relatively lower water concentration. IV) Variables: Independent- concentration of sugar solution (mol per dm³) Dependent- change in length of potato strip (cm) Control- initial length of potato strips (2cm); type of solution (sugar); type of potato b) Controlling Variables I) Independent: - The concentration of the sugar solution would be changed by using different volume of solvent to dilute the solute which would be measured by the
Plant Growth Investigation The scientific method is a way to ask and answer scientific questions by making observations and doing experiments. The question I was attempting to answer was; what are the effects of different types of water on the growth of grass? My hypothesis was if we water the grass seeds with bottled, tap, and salt water, then the seeds getting the bottled water will grow the best and be the tallest at the end of the experiment because the bottled water doesn’t have the toxins that the salt and tap water will have. We needed a lot of materials to conduct our experiment they were; • 6 Seven ounce cups • Soil • Seeds (20 per cup) • The 3 types of water (Salt, Bottled, Tap) • Graduated Cylinder • Ruler • Pencils • Sharpie • Our chart/packet Our procedure was to first gather all of the materials we needed. We first labeled each cup with what type of water we were going to use.