The effect of Sodium Chloride (NaCl) salt concentration on osmosis in potato cells The movement of substances in plant cells involves many processes and systems‚ all of which may affect the plant bio-chemically and physically‚ and one of these processes is osmosis. Osmosis is the flow of water through a semi-permeable membrane of a cell moving from an area of higher water potential to an area of lower water potential until reaching equilibrium known as isotonic. Before reaching the point of being
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Methods First‚ each researcher collects two petri dishes. After collecting the Petri dishes the researcher lines the dish with a papertowel. Then fills it with water‚ damping the paper towel and dumping out the exsess amount. Next‚ the researcher places 25 seeds on the paper towel in both petri dishes. After the seeds are placed in the dish‚ each researcher tapes the dish shut and takes them back to their place of residence. Placing one dish
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soil were placed in each chamber of a double petri dish with one being dampened before being placed in. For the light and dry experiment a light was hung above one chamber of another double-chambered petri dish while the other chamber was covered with aluminum foil‚ after placing soil in both chambers. An equal number of Pill bugs was placed in each chamber and a study was taken for ten minutes where every thirty seconds the number of Pill bugs in each dish was counted. The results showed that Pill
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group removed the dry seedpods from the plant. We then removed the seeds from the pod. To start the germination process‚ a moistened piece of filter paper was placed into a petri dish. 40 seeds were neatly placed into each petri dish until there were no seeds remaining. Once all the seeds were placed in the petri dish‚ the petri dishes were placed in a plastic bag and set to germinate for approximately 48 to 96 hours in the window at room temperatures. Results Table 1. F2 Generation Seed Germination
Free Seed Germination Plant morphology
The effects of osmosis on potatoes placed in different salt concentration Introduction: Osmosis is a movement of water across a semi-permeable membrane. This may only happen when there is a difference in concentration between the two sides of the membrane. The water moves from low concentrations to high concentrations. That is because the low concentrated area tries to dilute the opposite via osmosis. The effects osmosis has on a cell are either that it becomes turgid and hard as water enters
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IRP 3: Germination Introduction: Germination is the process of which a plant of fungus emerges from its seed or spore. Germination involves activating the seed’s metabolism‚ which is done through numerous stages. The fist stage involves the rehydrating the cell by absorbing water. This allows the cell to become metabolically active. After water absorption‚ gibberellin is produced in the cotyledon of the seed. The enzyme gibberellin stimulates the production of amylase‚ which catalyzes the
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Click on the Stockroom. Click on the Metals sample cabinet. Open the top drawer by clicking on it. When you open the drawer‚ a petri dish will show up on the counter. Place the sample of gold (Au) in the sample dish by double-clicking on it Zoom Out. Double-click on the petri dish to move it to the stockroom counter. Click the green arrow to Return to Lab. 2. Drag the petri dish to the spotlight near the balance. Click on the Balance area to zoom in. Drag the gold sample to the balance pan and record
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Ten Minutes of Specific Heat Remi Adams East Rowan High School AP Environmental Science Abstract Specific heat and climate were the primary focus of this lab. Specific heat is defined as “the measure of the ability of a substance to change temperature”. The purpose for carrying out this lab was to determine the specific heat/rates of both soil and water‚ and then comparing them. Students also were to relate specific heat to climate. Students were to determine which substance expressed
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Title: Investigation of protease activities in different fruit juices Aim: To investigate the protease activities in different fruit juices Background info: Fruit such as pineapple‚ kiwi fruit‚ papaya and guava contain proteases (in different amounts)‚ which can speed up the breakdown of proteins. As milk-agar plate is a milk protein‚ so when it is incubated with fruit juices containing proteases‚ the milk protein will be broken down and clear zones will appear around the wells containing different
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Title: Diffusion throughout the membranes Lab Partner(s): Alexis Clouting Date: 2/15/15 Abstract: In the content of the Module 2 we learned about Diffusion across cell membranes. We touched on the different types of cells and their functions. How things are transported in and out of cells. Learning about isotonic‚ hypertonic and even hypotonic solution. This is not my first time touching on this subject in my nursing career and I learned a way to remember what happens in the different solutions
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