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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be controlled by closing all doors and windows in the classroom‚ in order to maintain the room temperature and not disrupt the experiment. Apparatus: - Timer - 1 sheet of squared paper (square’s area 1cm2) - 1 non-heated lamp - 1½ of a Petri dish - 1 ruler - 1 plastic spoon - 5 Porcellio scaber Method: 1. Collect the materials listed above. Next‚ plug-in the non-heated lamp and position it so that it is 19cm away from where the Porcellio scaber will be placed (measure this distance
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The termites’ reaction to pheromones in different colors of ballpoint pen ink. Abstract: We conducted the experiment with termites in order to determine how they react to pheromones present in different colors of ballpoint pen ink. The experiment consisted of two parts: in first part we used a ballpoint pen with blue ink‚ in second – a ballpoint pen with red ink. The reaction of termites was measured by their performance in 1 minute. Every termite in experimental group went through 3 tries in each
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a piece of paper towel to fit inside a petri dish. 2. Place the paper towel inside the petri dish and moisten with water. Started 3/1/2013.100 seeds. 3. Sprinkle all of the seeds onto the paper towel and then cover the petri dish. 4. Place seeds near a warm window with indirect light. 5. Observe seeds for germination each day and moisten the paper towel as needed. 6. Once the majority of seeds have germinated‚ remove the lid of the petri dish and count the number of seedlings that
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Independent Variable: Temperature (in Celsius) Dependent Variable: Amount of prodigiosin produced Methods/Procedures see attached lab‚ procedures‚ page 2527 Data see attached lab‚ data‚ page 25‚ 26 Analysis 1. You should label the bottom of a petri dish instead of the top because this
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